bridge: multicast_flood cleanup

Move some declarations around to make it clearer which variables
are being used inside loop.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_forward.c

@@ -208,17 +208,15 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
 {
 	struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;
 	struct net_bridge *br = netdev_priv(dev);
-	struct net_bridge_port *port;
-	struct net_bridge_port *lport, *rport;
-	struct net_bridge_port *prev;
+	struct net_bridge_port *prev = NULL;
 	struct net_bridge_port_group *p;
 	struct hlist_node *rp;
 
-	prev = NULL;
-
 	rp = rcu_dereference(br->router_list.first);
 	p = mdst ? rcu_dereference(mdst->ports) : NULL;
 	while (p || rp) {
+		struct net_bridge_port *port, *lport, *rport;
+
 		lport = p ? p->port : NULL;
 		rport = rp ? hlist_entry(rp, struct net_bridge_port, rlist) :
 			     NULL;