usbnet: fix error return code in usbnet_probe()

Return error code if usb_maxpacket() returns 0 in usbnet_probe()

Fixes: 397430b5 ("usbnet: sanity check for maxpacket")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211026124015.3025136-1-wanghai38@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/usb/usbnet.c

@@ -1790,6 +1790,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
 	if (dev->maxpacket == 0) {
 		/* that is a broken device */
+		status = -ENODEV;
 		goto out4;
 	}