ipvs: Avoid shadowing net variable in ip_vs_leave()

Flagged by sparse.
Compile and sparse tested only.
Acked-by: NJulian Anastasov <ja@ssi.bg>
Signed-off-by: NSimon Horman <horms@verge.net.au>

net/netfilter/ipvs/ip_vs_core.c

@@ -584,9 +584,9 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
 #ifdef CONFIG_IP_VS_IPV6
 	if (svc->af == AF_INET6) {
 		if (!skb->dev) {
-			struct net *net = dev_net(skb_dst(skb)->dev);
+			struct net *net_ = dev_net(skb_dst(skb)->dev);
 
-			skb->dev = net->loopback_dev;
+			skb->dev = net_->loopback_dev;
 		}
 		icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0);
 	} else