media: i2c/tw9903: Fix potential memory leak in tw9903_probe()

[ Upstream commit 9cea16f ]

In one of the error paths in tw9903_probe(), the memory allocated in
v4l2_ctrl_handler_init() and v4l2_ctrl_new_std() is not freed. Fix that
by calling v4l2_ctrl_handler_free() on the handler in that error path.

Cc: stable@vger.kernel.org
Fixes: 0890ec1 ("[media] tw9903: add new tw9903 video decoder")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Abdun Nihaal

drivers/media/i2c/tw9903.c

@@ -228,6 +228,7 @@ static int tw9903_probe(struct i2c_client *client)
 
 	if (write_regs(sd, initial_registers) < 0) {
 		v4l2_err(client, "error initializing TW9903\n");
+		v4l2_ctrl_handler_free(hdl);
 		return -EINVAL;
 	}