[PATCH] iio: adc: ad799x: Fix error handling in ad799x_probe()

[Alexey Khoroshilov]

In case of errors in write/read config, st->vref is left undisabled.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru>
Fixes: 0f7ddcc1bff1 ("iio:adc:ad799x: Write default config on probe and reset 
alert status on probe")
---
 drivers/iio/adc/ad799x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index e1da67d5ee22..9e61720db7ea 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -814,10 +814,10 @@ static int ad799x_probe(struct i2c_client *client,
 
        ret = ad799x_write_config(st, st->chip_config->default_config);
        if (ret < 0)
-               goto error_disable_reg;
+               goto error_disable_vref;
        ret = ad799x_read_config(st);
        if (ret < 0)
-               goto error_disable_reg;
+               goto error_disable_vref;
        st->config = ret;
 
        ret = iio_triggered_buffer_setup(indio_dev, NULL,
-- 
2.7.4