drm/udl: Set error code in udl_init()

Return -ENOMEM if udl_alloc_urb_list() fails. Don't return success.

Fixes: fb10144ba426 ("drm/udl: Support adapters without firmware descriptor")
Signed-off-by: Dan Carpenter <[e-mail]>
Reviewed-by: Thomas Zimmermann <[e-mail]>
Signed-off-by: Thomas Zimmermann <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/gpu/drm/udl/udl_main.c

···
 
 	if (!udl_alloc_urb_list(udl, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
 		DRM_ERROR("udl_alloc_urb_list failed\n");
+		ret = -ENOMEM;
 		goto err;
 	}