net: bridge: mcast: account for ipv6 size when dumping querier state

We need to account for the IPv6 attributes when dumping querier state.

Fixes: 5e924fe6ccfd ("net: bridge: mcast: dump ipv6 querier state")
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_multicast.c

@@ -2931,7 +2931,13 @@ size_t br_multicast_querier_state_size(void)
 	return nla_total_size(0) +		/* nest attribute */
 	       nla_total_size(sizeof(__be32)) + /* BRIDGE_QUERIER_IP_ADDRESS */
 	       nla_total_size(sizeof(int)) +    /* BRIDGE_QUERIER_IP_PORT */
-	       nla_total_size_64bit(sizeof(u64)); /* BRIDGE_QUERIER_IP_OTHER_TIMER */
+	       nla_total_size_64bit(sizeof(u64)) + /* BRIDGE_QUERIER_IP_OTHER_TIMER */
+#if IS_ENABLED(CONFIG_IPV6)
+	       nla_total_size(sizeof(struct in6_addr)) + /* BRIDGE_QUERIER_IPV6_ADDRESS */
+	       nla_total_size(sizeof(int)) +		 /* BRIDGE_QUERIER_IPV6_PORT */
+	       nla_total_size_64bit(sizeof(u64)) +	 /* BRIDGE_QUERIER_IPV6_OTHER_TIMER */
+#endif
+	       0;
 }
 
 /* protected by rtnl or rcu */