[PATCH] media: mc-device.c: fix memleak in media_device_register_entity

[zhengbin]

In media_device_register_entity, if media_graph_walk_init fails,
need to free the previously memory.

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: zhengbin <zhengbi...@huawei.com>
---
 drivers/media/mc/mc-device.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/mc/mc-device.c b/drivers/media/mc/mc-device.c
index e19df51..939be00 100644
--- a/drivers/media/mc/mc-device.c
+++ b/drivers/media/mc/mc-device.c
@@ -632,6 +632,7 @@ int __must_check media_device_register_entity(struct 
media_device *mdev,
                 */
                ret = media_graph_walk_init(&new, mdev);
                if (ret) {
+                       __media_device_unregister_entity(entity);
                        mutex_unlock(&mdev->graph_mutex);
                        return ret;
                }
--
2.7.4