usbnet: rtl8150: remove unused variable

remove unused variable
Signed-off-by: NSudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/usb/rtl8150.c

@@ -753,14 +753,13 @@ static int rtl8150_open(struct net_device *netdev)
 static int rtl8150_close(struct net_device *netdev)
 {
 	rtl8150_t *dev = netdev_priv(netdev);
-	int res = 0;
 
 	netif_stop_queue(netdev);
 	if (!test_bit(RTL8150_UNPLUG, &dev->flags))
 		disable_net_traffic(dev);
 	unlink_all_urbs(dev);
 
-	return res;
+	return 0;
 }
 
 static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)