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netfilter: nft_inner: fix IS_ERR() vs NULL check

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The __nft_expr_type_get() function returns NULL on error.  It never
returns error pointers.

Fixes: 3a07327d10 ("netfilter: nft_inner: support for inner tunnel header matching")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Dan Carpenter 2022-11-15 16:26:07 +03:00 • committed by Pablo Neira Ayuso
parent 339e79dfb0
commit 98cbc40e4f
1 changed files with 2 additions and 2 deletions
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4
net/netfilter/nf_tables_api.c
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@ -2873,8 +2873,8 @@ int nft_expr_inner_parse(const struct nft_ctx *ctx, const struct nlattr *nla,
return -EINVAL;
type = __nft_expr_type_get(ctx->family, tb[NFTA_EXPR_NAME]);
if (IS_ERR(type))
return PTR_ERR(type);
if (!type)
return -ENOENT;
if (!type->inner_ops)
return -EOPNOTSUPP;