iio: double unlock on error path

We should be holding the mutex when we goto error_free_chans.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index e2aded04996b..b5afc2ff34fd 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -198,11 +198,12 @@ struct iio_channel *iio_channel_get_all(const char *name)
                 iio_device_get(chans[mapind].indio_dev);
                 mapind++;
         }
-        mutex_unlock(&iio_map_list_lock);
         if (mapind == 0) {
                 ret = -ENODEV;
                 goto error_free_chans;
         }
+        mutex_unlock(&iio_map_list_lock);
+
         return chans;
 
 error_free_chans: