netfilter: nf_tables: add NFTA_RULE_POSITION_ID to nla_policy

Fixes: 75dd48e2 ("netfilter: nf_tables: Support RULE_ID reference in new rule")
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/nf_tables_api.c

@@ -2239,6 +2239,7 @@ static const struct nla_policy nft_rule_policy[NFTA_RULE_MAX + 1] = {
 	[NFTA_RULE_USERDATA]	= { .type = NLA_BINARY,
 				    .len = NFT_USERDATA_MAXLEN },
 	[NFTA_RULE_ID]		= { .type = NLA_U32 },
+	[NFTA_RULE_POSITION_ID]	= { .type = NLA_U32 },
 };
 
 static int nf_tables_fill_rule_info(struct sk_buff *skb, struct net *net,