netfilter: nf_tables: Modify nla_memdup's flag to GFP_KERNEL_ACCOUNT

For memory alloc that store user data from nla[NFTA_OBJ_USERDATA],
use GFP_KERNEL_ACCOUNT is more suitable.

Fixes: 33758c89 ("memcg: enable accounting for nft objects")
Signed-off-by: Chen Aotian <chenaotian2@163.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/nf_tables_api.c

@@ -7052,7 +7052,7 @@ static int nf_tables_newobj(struct sk_buff *skb, const struct nfnl_info *info,
 	}
 
 	if (nla[NFTA_OBJ_USERDATA]) {
-		obj->udata = nla_memdup(nla[NFTA_OBJ_USERDATA], GFP_KERNEL);
+		obj->udata = nla_memdup(nla[NFTA_OBJ_USERDATA], GFP_KERNEL_ACCOUNT);
 		if (obj->udata == NULL)
 			goto err_userdata;