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>

diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c
index 5b43030..0ee6f8e 100644 (file)
--- 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,