infiniband: nes: Convert nes_addr_resolve_neigh() over to dst_neigh_lookup().

Now we must provide the IP destination address, and a reference has
to be dropped when we're done with the entry.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/nes/nes_cm.c

@@ -1348,8 +1348,9 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
 	else
 		netdev = nesvnic->netdev;
 
+	neigh = dst_neigh_lookup(&rt->dst, &dst_ip);
+
 	rcu_read_lock();
-	neigh = dst_get_neighbour_noref(&rt->dst);
 	if (neigh) {
 		if (neigh->nud_state & NUD_VALID) {
 			nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X"
@@ -1360,8 +1361,7 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
 				if (!memcmp(nesadapter->arp_table[arpindex].mac_addr,
 					    neigh->ha, ETH_ALEN)) {
 					/* Mac address same as in nes_arp_table */
-					ip_rt_put(rt);
-					return rc;
+					goto out;
 				}
 
 				nes_manage_arp_cache(nesvnic->netdev,
@@ -1377,7 +1377,12 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
 			neigh_event_send(neigh, NULL);
 		}
 	}
+out:
 	rcu_read_unlock();
+
+	if (neigh)
+		neigh_release(neigh);
+
 	ip_rt_put(rt);
 	return rc;
 }