netfilter: nft_meta_bridge: Fix get NFT_META_BRI_IIFVPROTO in network byteorder

Get the vlan_proto of ingress bridge in network byteorder as userspace
expects. Otherwise this is inconsistent with NFT_META_PROTOCOL.

Fixes: 2a3a93ef ("netfilter: nft_meta_bridge: Add NFT_META_BRI_IIFVPROTO support")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/bridge/netfilter/nft_meta_bridge.c

@@ -53,7 +53,7 @@ static void nft_meta_bridge_get_eval(const struct nft_expr *expr,
 			goto err;
 
 		br_vlan_get_proto(br_dev, &p_proto);
-		nft_reg_store16(dest, p_proto);
+		nft_reg_store16(dest, htons(p_proto));
 		return;
 	}
 	default: