netfilter: nft_dynset: allow dynamic updates of non-anonymous set

This check is superfluous since it breaks valid configurations, remove it.
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/nft_dynset.c

@@ -187,8 +187,6 @@ static int nft_dynset_init(const struct nft_ctx *ctx,
 	if (tb[NFTA_DYNSET_EXPR] != NULL) {
 		if (!(set->flags & NFT_SET_EVAL))
 			return -EINVAL;
-		if (!nft_set_is_anonymous(set))
-			return -EOPNOTSUPP;
 
 		priv->expr = nft_expr_init(ctx, tb[NFTA_DYNSET_EXPR]);
 		if (IS_ERR(priv->expr))