[PATCH net-next/netfilter] 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: 3a07327d10a0 ("netfilter: nft_inner: support for inner tunnel header matching")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
This applies to net-next but presumably it's going to go through the
netfilter tree?

 net/netfilter/nf_tables_api.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 62da204eed41..6b159494c86b 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -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;
-- 
2.35.1




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