[PATCH] media: mali-c55: Fix double mutex_destroy on capture dev register error

[David Carlier <devnexen@gmail.com>]

In mali_c55_register_cap_dev(), a failure of media_entity_pads_init()
destroys cap_dev->lock inline and then jumps to err_destroy_mutex, which
destroys the same mutex a second time. The switch default case just above
already handles this correctly by jumping straight to the label without an
inline destroy.

Drop the inline mutex_destroy() and rely on the err_destroy_mutex label,
so the mutex is destroyed exactly once on every error path.

Fixes: d5f281f3dd29 ("media: mali-c55: Add Mali-C55 ISP driver")
Signed-off-by: David Carlier <devnexen@gmail.com>
---
 drivers/media/platform/arm/mali-c55/mali-c55-capture.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/platform/arm/mali-c55/mali-c55-capture.c b/drivers/media/platform/arm/mali-c55/mali-c55-capture.c
index 7aaa5c3f7..ff0155302 100644
--- a/drivers/media/platform/arm/mali-c55/mali-c55-capture.c
+++ b/drivers/media/platform/arm/mali-c55/mali-c55-capture.c
@@ -857,10 +857,8 @@ static int mali_c55_register_cap_dev(struct mali_c55 *mali_c55,
 
 	cap_dev->pad.flags = MEDIA_PAD_FL_SINK;
 	ret = media_entity_pads_init(&cap_dev->vdev.entity, 1, &cap_dev->pad);
-	if (ret) {
-		mutex_destroy(&cap_dev->lock);
+	if (ret)
 		goto err_destroy_mutex;
-	}
 
 	vb2q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
 	vb2q->io_modes = VB2_MMAP | VB2_DMABUF;
-- 
2.53.0