[PATCH 08/13] netfilter: nft_exthdr: fix error handling in nft_exthdr_init()

[Pablo Neira Ayuso]

From: Dan Carpenter <dan.carpen...@oracle.com>

"err" needs to be signed for the error handling to work.

Fixes: 36b701fae12a ('netfilter: nf_tables: validate maximum value of u32 
netlink attributes')
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
---
 net/netfilter/nft_exthdr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/nft_exthdr.c b/net/netfilter/nft_exthdr.c
index a84cf3d66056..47beb3abcc9d 100644
--- a/net/netfilter/nft_exthdr.c
+++ b/net/netfilter/nft_exthdr.c
@@ -59,7 +59,8 @@ static int nft_exthdr_init(const struct nft_ctx *ctx,
                           const struct nlattr * const tb[])
 {
        struct nft_exthdr *priv = nft_expr_priv(expr);
-       u32 offset, len, err;
+       u32 offset, len;
+       int err;
 
        if (tb[NFTA_EXTHDR_DREG] == NULL ||
            tb[NFTA_EXTHDR_TYPE] == NULL ||
-- 
2.1.4