iio:dac:ad5449: unlock on error path

There is an unlock missing on this error path.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c
index 5b43030fe6e3..0ee6f8eeba8d 100644
--- a/drivers/iio/dac/ad5449.c
+++ b/drivers/iio/dac/ad5449.c
@@ -124,12 +124,13 @@ static int ad5449_read(struct iio_dev *indio_dev, unsigned int addr,
 
         ret = spi_sync(st->spi, &msg);
         if (ret < 0)
-                return ret;
+                goto out_unlock;
 
         *val = be16_to_cpu(st->data[1]);
-        mutex_unlock(&indio_dev->mlock);
 
-        return 0;
+out_unlock:
+        mutex_unlock(&indio_dev->mlock);
+        return ret;
 }
 
 static int ad5449_read_raw(struct iio_dev *indio_dev,