This code was cut and pasted in several places.  It's missing some
unlocks on error.

Signed-off-by: Dan Carpenter <[email protected]>

diff --git a/drivers/staging/iio/accel/adis16203_core.c 
b/drivers/staging/iio/accel/adis16203_core.c
index b6e0d84..30be963 100644
--- a/drivers/staging/iio/accel/adis16203_core.c
+++ b/drivers/staging/iio/accel/adis16203_core.c
@@ -312,13 +312,17 @@ static int adis16203_read_raw(struct iio_dev *indio_dev,
                mutex_lock(&indio_dev->mlock);
                addr = adis16203_addresses[chan->address][0];
                ret = adis16203_spi_read_reg_16(indio_dev, addr, &val16);
-               if (ret)
+               if (ret) {
+                       mutex_unlock(&indio_dev->mlock);
                        return ret;
+               }
 
                if (val16 & ADIS16203_ERROR_ACTIVE) {
                        ret = adis16203_check_status(indio_dev);
-                       if (ret)
+                       if (ret) {
+                               mutex_unlock(&indio_dev->mlock);
                                return ret;
+                       }
                }
                val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
                if (chan->scan_type.sign == 's')
diff --git a/drivers/staging/iio/accel/adis16204_core.c 
b/drivers/staging/iio/accel/adis16204_core.c
index 61c2442..eb68367 100644
--- a/drivers/staging/iio/accel/adis16204_core.c
+++ b/drivers/staging/iio/accel/adis16204_core.c
@@ -342,13 +342,17 @@ static int adis16204_read_raw(struct iio_dev *indio_dev,
                mutex_lock(&indio_dev->mlock);
                addr = adis16204_addresses[chan->address][0];
                ret = adis16204_spi_read_reg_16(indio_dev, addr, &val16);
-               if (ret)
+               if (ret) {
+                       mutex_unlock(&indio_dev->mlock);
                        return ret;
+               }
 
                if (val16 & ADIS16204_ERROR_ACTIVE) {
                        ret = adis16204_check_status(indio_dev);
-                       if (ret)
+                       if (ret) {
+                               mutex_unlock(&indio_dev->mlock);
                                return ret;
+                       }
                }
                val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
                if (chan->scan_type.sign == 's')
diff --git a/drivers/staging/iio/accel/adis16209_core.c 
b/drivers/staging/iio/accel/adis16209_core.c
index 238438e..39a6136 100644
--- a/drivers/staging/iio/accel/adis16209_core.c
+++ b/drivers/staging/iio/accel/adis16209_core.c
@@ -338,13 +338,17 @@ static int adis16209_read_raw(struct iio_dev *indio_dev,
                mutex_lock(&indio_dev->mlock);
                addr = adis16209_addresses[chan->address][0];
                ret = adis16209_spi_read_reg_16(indio_dev, addr, &val16);
-               if (ret)
+               if (ret) {
+                       mutex_unlock(&indio_dev->mlock);
                        return ret;
+               }
 
                if (val16 & ADIS16209_ERROR_ACTIVE) {
                        ret = adis16209_check_status(indio_dev);
-                       if (ret)
+                       if (ret) {
+                               mutex_unlock(&indio_dev->mlock);
                                return ret;
+                       }
                }
                val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
                if (chan->scan_type.sign == 's')
diff --git a/drivers/staging/iio/accel/adis16240_core.c 
b/drivers/staging/iio/accel/adis16240_core.c
index 3abac95..d1f5305 100644
--- a/drivers/staging/iio/accel/adis16240_core.c
+++ b/drivers/staging/iio/accel/adis16240_core.c
@@ -371,13 +371,17 @@ static int adis16240_read_raw(struct iio_dev *indio_dev,
                mutex_lock(&indio_dev->mlock);
                addr = adis16240_addresses[chan->address][0];
                ret = adis16240_spi_read_reg_16(indio_dev, addr, &val16);
-               if (ret)
+               if (ret) {
+                       mutex_unlock(&indio_dev->mlock);
                        return ret;
+               }
 
                if (val16 & ADIS16240_ERROR_ACTIVE) {
                        ret = adis16240_check_status(indio_dev);
-                       if (ret)
+                       if (ret) {
+                               mutex_unlock(&indio_dev->mlock);
                                return ret;
+                       }
                }
                val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
                if (chan->scan_type.sign == 's')
diff --git a/drivers/staging/iio/gyro/adis16260_core.c 
b/drivers/staging/iio/gyro/adis16260_core.c
index 02de650..429c252 100644
--- a/drivers/staging/iio/gyro/adis16260_core.c
+++ b/drivers/staging/iio/gyro/adis16260_core.c
@@ -447,13 +447,17 @@ static int adis16260_read_raw(struct iio_dev *indio_dev,
                mutex_lock(&indio_dev->mlock);
                addr = adis16260_addresses[chan->address][0];
                ret = adis16260_spi_read_reg_16(indio_dev, addr, &val16);
-               if (ret)
+               if (ret) {
+                       mutex_unlock(&indio_dev->mlock);
                        return ret;
+               }
 
                if (val16 & ADIS16260_ERROR_ACTIVE) {
                        ret = adis16260_check_status(indio_dev);
-                       if (ret)
+                       if (ret) {
+                               mutex_unlock(&indio_dev->mlock);
                                return ret;
+                       }
                }
                val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
                if (chan->scan_type.sign == 's')
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