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net: sctp: fix warning "NULL check before some freeing functions is not needed"

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This patch removes NULL checks before calling kfree.

fixes below issues reported by coccicheck
net/sctp/sm_make_chunk.c:2586:3-8: WARNING: NULL check before some
freeing functions is not needed.
net/sctp/sm_make_chunk.c:2652:3-8: WARNING: NULL check before some
freeing functions is not needed.
net/sctp/sm_make_chunk.c:2667:3-8: WARNING: NULL check before some
freeing functions is not needed.
net/sctp/sm_make_chunk.c:2684:3-8: WARNING: NULL check before some
freeing functions is not needed.

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Kelam 2019-07-16 07:50:02 +05:30 committed by David S. Miller
parent fdd258d49e
commit 86fda90ab5
1 changed files with 4 additions and 8 deletions
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12
net/sctp/sm_make_chunk.c
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@ -2582,8 +2582,7 @@ do_addr_param:
case SCTP_PARAM_STATE_COOKIE:
asoc->peer.cookie_len =
ntohs(param.p->length) - sizeof(struct sctp_paramhdr);
if (asoc->peer.cookie)
kfree(asoc->peer.cookie);
kfree(asoc->peer.cookie);
asoc->peer.cookie = kmemdup(param.cookie->body, asoc->peer.cookie_len, gfp);
if (!asoc->peer.cookie)
retval = 0;
@ -2648,8 +2647,7 @@ do_addr_param:
goto fall_through;
/* Save peer's random parameter */
if (asoc->peer.peer_random)
kfree(asoc->peer.peer_random);
kfree(asoc->peer.peer_random);
asoc->peer.peer_random = kmemdup(param.p,
ntohs(param.p->length), gfp);
if (!asoc->peer.peer_random) {
@ -2663,8 +2661,7 @@ do_addr_param:
goto fall_through;
/* Save peer's HMAC list */
if (asoc->peer.peer_hmacs)
kfree(asoc->peer.peer_hmacs);
kfree(asoc->peer.peer_hmacs);
asoc->peer.peer_hmacs = kmemdup(param.p,
ntohs(param.p->length), gfp);
if (!asoc->peer.peer_hmacs) {
@ -2680,8 +2677,7 @@ do_addr_param:
if (!ep->auth_enable)
goto fall_through;
if (asoc->peer.peer_chunks)
kfree(asoc->peer.peer_chunks);
kfree(asoc->peer.peer_chunks);
asoc->peer.peer_chunks = kmemdup(param.p,
ntohs(param.p->length), gfp);
if (!asoc->peer.peer_chunks)