iio: frequency: ad9523: unlock on error in ad9523_reg_access()

There was a return path which got missed accidentally.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c
index 7272924484c1..832e6ab26114 100644
--- a/drivers/iio/frequency/ad9523.c
+++ b/drivers/iio/frequency/ad9523.c
@@ -731,10 +731,12 @@ static int ad9523_reg_access(struct iio_dev *indio_dev,
         } else {
                 ret = ad9523_read(indio_dev, reg | AD9523_R1B);
                 if (ret < 0)
-                        return ret;
+                        goto out_unlock;
                 *readval = ret;
                 ret = 0;
         }
+
+out_unlock:
         mutex_unlock(&indio_dev->mlock);
 
         return ret;