Input: sur40 - fix an error code in sur40_probe()

stable inclusion
from stable-5.10.20
commit 47c9d32e7170a58213877519db35f158631d5f2a
bugzilla: 50608

--------------------------------

[ Upstream commit b0b7d281 ]

If v4l2_ctrl_handler_setup() fails then probe() should return an error
code instead of returning success.

Fixes: cee1e3e2 ("media: add video control handlers using V4L2 control framework")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YBKFkbATXa5fA3xj@mwandaSigned-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/input/touchscreen/sur40.c

@@ -787,6 +787,7 @@ static int sur40_probe(struct usb_interface *interface,
 		dev_err(&interface->dev,
 			"Unable to register video controls.");
 		v4l2_ctrl_handler_free(&sur40->hdl);
+		error = sur40->hdl.error;
 		goto err_unreg_v4l2;
 	}