media: hi846: Fix memleak in hi846_init_controls()

[ Upstream commit 2649c1a ]

hi846_init_controls doesn't clean the allocated ctrl_hdlr
in case there is a failure, which causes memleak. Add
v4l2_ctrl_handler_free to free the resource properly.

Fixes: e8c0882 ("media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera")
Signed-off-by: Wei Chen <harperchen1110@gmail.com>
Reviewed-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/media/i2c/hi846.c

@@ -1472,21 +1472,26 @@ static int hi846_init_controls(struct hi846 *hi846)
 	if (ctrl_hdlr->error) {
 		dev_err(&client->dev, "v4l ctrl handler error: %d\n",
 			ctrl_hdlr->error);
-		return ctrl_hdlr->error;
+		ret = ctrl_hdlr->error;
+		goto error;
 	}
 
 	ret = v4l2_fwnode_device_parse(&client->dev, &props);
 	if (ret)
-		return ret;
+		goto error;
 
 	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &hi846_ctrl_ops,
 					      &props);
 	if (ret)
-		return ret;
+		goto error;
 
 	hi846->sd.ctrl_handler = ctrl_hdlr;
 
 	return 0;
+
+error:
+	v4l2_ctrl_handler_free(ctrl_hdlr);
+	return ret;
 }
 
 static int hi846_set_video_mode(struct hi846 *hi846, int fps)