netfilter: nf_tables: release new hooks on unsupported flowtable flags

stable inclusion
from stable-v5.10.122
commit 67e2d448733c2480ea5f5e9def6392f3615c836d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5W6OE

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=67e2d448733c2480ea5f5e9def6392f3615c836d

--------------------------------

[ Upstream commit c271cc9f ]

Release the list of new hooks that are pending to be registered in case
that unsupported flowtable flags are provided.

Fixes: 78d9f48f ("netfilter: nf_tables: add devices to existing flowtable")
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>

net/netfilter/nf_tables_api.c

@@ -6708,11 +6708,15 @@ static int nft_flowtable_update(struct nft_ctx *ctx, const struct nlmsghdr *nlh,
 
 	if (nla[NFTA_FLOWTABLE_FLAGS]) {
 		flags = ntohl(nla_get_be32(nla[NFTA_FLOWTABLE_FLAGS]));
-		if (flags & ~NFT_FLOWTABLE_MASK)
-			return -EOPNOTSUPP;
+		if (flags & ~NFT_FLOWTABLE_MASK) {
+			err = -EOPNOTSUPP;
+			goto err_flowtable_update_hook;
+		}
 		if ((flowtable->data.flags & NFT_FLOWTABLE_HW_OFFLOAD) ^
-		    (flags & NFT_FLOWTABLE_HW_OFFLOAD))
-			return -EOPNOTSUPP;
+		    (flags & NFT_FLOWTABLE_HW_OFFLOAD)) {
+			err = -EOPNOTSUPP;
+			goto err_flowtable_update_hook;
+		}
 	} else {
 		flags = flowtable->data.flags;
 	}