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>

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index e2aded0..b5afc2f 100644 (file)
--- 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: