[PATCH v2] media: i2c: rdacm21: Fix missing media_entity_cleanup()

[Biren Pandya <birenpandya@gmail.com>]

The driver misses calling media_entity_cleanup() on the probe error path
and during remove, leaking resources if probe fails after entity
initialization or when the driver is unloaded.

Fix this by adding media_entity_cleanup() to the rdacm21_probe() error
handling path and to rdacm21_remove().

Fixes: a59f853b3b4b ("media: i2c: Add driver for RDACM21 camera module")
Signed-off-by: Biren Pandya <birenpandya@gmail.com>
---
Changes in v2:
- Fixed a bug in v1's probe error handling where media_entity_cleanup() could be called on an uninitialized entity.
- Added Signed-off-by tag which was missing in v1.

 drivers/media/i2c/rdacm21.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/rdacm21.c b/drivers/media/i2c/rdacm21.c
index bcab462708c70..ece8a410e7ced 100644
--- a/drivers/media/i2c/rdacm21.c
+++ b/drivers/media/i2c/rdacm21.c
@@ -588,10 +588,12 @@ static int rdacm21_probe(struct i2c_client *client)
 
 	ret = v4l2_async_register_subdev(&dev->sd);
 	if (ret)
-		goto error_free_ctrls;
+		goto error_entity_cleanup;
 
 	return 0;
 
+error_entity_cleanup:
+	media_entity_cleanup(&dev->sd.entity);
 error_free_ctrls:
 	v4l2_ctrl_handler_free(&dev->ctrls);
 error:
@@ -606,6 +608,7 @@ static void rdacm21_remove(struct i2c_client *client)
 
 	v4l2_async_unregister_subdev(&dev->sd);
 	v4l2_ctrl_handler_free(&dev->ctrls);
+	media_entity_cleanup(&dev->sd.entity);
 	i2c_unregister_device(dev->isp);
 }
 
-- 
2.50.1 (Apple Git-155)