[patch] iio: cros_ec_sensors_core: signedness bug in cros_ec_sensors_read_lpc()

[Dan Carpenter]

"status" is a u8 so checking for negatives doesn't work.  We can just
use "ret" here instead.

Fixes: 974e6f02e27e ("iio: cros_ec_sensors_core: Add common functions for the 
ChromeOS EC Sensor Hub.")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c 
b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index a3be799..416cae5 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -291,15 +291,15 @@ int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev,
                        return -EIO;
 
                /* Read status byte until EC is not busy. */
-               status = cros_ec_sensors_read_until_not_busy(st);
-               if (status < 0)
-                       return status;
+               ret = cros_ec_sensors_read_until_not_busy(st);
+               if (ret < 0)
+                       return ret;
 
                /*
                 * Store the current sample id so that we can compare to the
                 * sample id after reading the data.
                 */
-               samp_id = status & EC_MEMMAP_ACC_STATUS_SAMPLE_ID_MASK;
+               samp_id = ret & EC_MEMMAP_ACC_STATUS_SAMPLE_ID_MASK;
 
                /* Read all EC data, format it, and store it into data. */
                ret = cros_ec_sensors_read_data_unsafe(indio_dev, scan_mask,