bridge: mdb: reduce the indentation level in br_mdb_fill_info

Switch the port check and skip if it's null, this allows us to reduce one
indentation level.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_mdb.c

@@ -88,9 +88,11 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
 			for (pp = &mp->ports;
 			     (p = rcu_dereference(*pp)) != NULL;
 			      pp = &p->next) {
-				port = p->port;
-				if (port) {
 				struct br_mdb_entry e;
+
+				port = p->port;
+				if (!port)
+					continue;
 				memset(&e, 0, sizeof(e));
 				e.ifindex = port->dev->ifindex;
 				e.vid = p->addr.vid;
@@ -108,7 +110,6 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
 					goto out;
 				}
 			}
-			}
 			nla_nest_end(skb, nest2);
 		skip:
 			idx++;