net: bridge: remove redundant assignment

The variable br is assigned a value that is not being read after
exiting case IFLA_STATS_LINK_XSTATS_SLAVE. The assignment is
redundant and can be removed.

Addresses-Coverity ("Unused value")
Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_netlink.c

@@ -1644,7 +1644,6 @@ static size_t br_get_linkxstats_size(const struct net_device *dev, int attr)
 		p = br_port_get_rtnl(dev);
 		if (!p)
 			return 0;
-		br = p->br;
 		vg = nbp_vlan_group(p);
 		break;
 	default: