bridge: remove oflags from setlink/dellink.

Commit 02dba4388d16 ("bridge: fix setlink/dellink notifications") removed usage of oflags in
both rtnl_bridge_setlink() and rtnl_bridge_dellink() methods. This patch removes this variable as it is no
longer needed.

Signed-off-by: Rami Rosen <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/core/rtnetlink.c

···
 	struct net_device *dev;
 	struct nlattr *br_spec, *attr = NULL;
 	int rem, err = -EOPNOTSUPP;
-	u16 oflags, flags = 0;
+	u16 flags = 0;
 	bool have_flags = false;
 
 	if (nlmsg_len(nlh) < sizeof(*ifm))
···
 			}
 		}
 	}
-
-	oflags = flags;
 
 	if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
 		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
···
 	struct net_device *dev;
 	struct nlattr *br_spec, *attr = NULL;
 	int rem, err = -EOPNOTSUPP;
-	u16 oflags, flags = 0;
+	u16 flags = 0;
 	bool have_flags = false;
 
 	if (nlmsg_len(nlh) < sizeof(*ifm))
···
 			}
 		}
 	}
-
-	oflags = flags;
 
 	if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
 		struct net_device *br_dev = netdev_master_upper_dev_get(dev);