usb: hub: Don't continue on get_port_status failure

The code shouldn't continue probing the port if get_port_status() failed.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Stephen Warren <swarren@nvidia.com>

common/usb_hub.c

@@ -402,6 +402,7 @@ static int usb_scan_port(struct usb_device_scan *usb_scan)
 			free(usb_scan);
 			return 0;
 		}
+		return 0;
 	}
 
 	portstatus = le16_to_cpu(portsts->wPortStatus);