[PATCH] scsi: cxgb3i: remove redundant null check and kfree on skb

From: Colin King
Date: Mon Mar 13 2017 - 15:14:34 EST


From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

On the error exit path, skb is always null, so the non-null check
and __kfree_skb call are redundant. Remove the redundant code,
rename the rel_release label to err and make error paths jump to
the err exit path.

Detected by CoverityScan, CID#114328 ("Logically Dead Code")

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/scsi/cxgbi/cxgb3i/cxgb3i.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
index 1880eb6..f453a78 100644
--- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
+++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
@@ -972,21 +972,21 @@ static int init_act_open(struct cxgbi_sock *csk)
&csk->daddr.sin_addr.s_addr);
if (!csk->l2t) {
pr_err("NO l2t available.\n");
- return -EINVAL;
+ goto err;
}
cxgbi_sock_get(csk);

csk->atid = cxgb3_alloc_atid(t3dev, &t3_client, csk);
if (csk->atid < 0) {
pr_err("NO atid available.\n");
- goto rel_resource;
+ goto err;
}
cxgbi_sock_set_flag(csk, CTPF_HAS_ATID);
cxgbi_sock_get(csk);

skb = alloc_wr(sizeof(struct cpl_act_open_req), 0, GFP_KERNEL);
if (!skb)
- goto rel_resource;
+ goto err;
skb->sk = (struct sock *)csk;
set_arp_failure_handler(skb, act_open_arp_failure);
csk->snd_win = cxgb3i_snd_win;
@@ -1008,9 +1008,7 @@ static int init_act_open(struct cxgbi_sock *csk)
send_act_open_req(csk, skb, csk->l2t);
return 0;

-rel_resource:
- if (skb)
- __kfree_skb(skb);
+err:
return -EINVAL;
}

--
2.10.2