Subject: [patch -master] netfilter: xt_CT: checking for IS_ERR() instead of NULL

From: Dan Carpenter <[email-masked]>
Date: Tue, 28 Jul 2015 01:42:28 +0300

We recently changed this from nf_conntrack_alloc() to nf_ct_tmpl_alloc()
so the error handling needs to changed to check for NULL instead of
IS_ERR().

Fixes: 0838aa7fcfcd ('netfilter: fix netns dependencies with conntrack templates')
Signed-off-by: Dan Carpenter <[email-masked]>

diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index c663003..43ddeee 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -202,9 +202,10 @@ static int xt_ct_tg_check(const struct xt_tgchk_param *par,
 		goto err1;
 
 	ct = nf_ct_tmpl_alloc(par->net, info->zone, GFP_KERNEL);
-	ret = PTR_ERR(ct);
-	if (IS_ERR(ct))
+	if (!ct) {
+		ret = -ENOMEM;
 		goto err2;
+	}
 
 	ret = 0;
 	if ((info->ct_events || info->exp_events) &&