sctp: fix crash during module unload

An extra list_del() during the module load failure and unload
resulted in a crash with a list corruption.  Now sctp can
be unloaded again.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 4 deletions

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index b78e3be69013..4e6638449639 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1322,9 +1322,8 @@ SCTP_STATIC __init int sctp_init(void)
 out:
         return status;
 err_v6_add_protocol:
-        sctp_v6_del_protocol();
-err_add_protocol:
         sctp_v4_del_protocol();
+err_add_protocol:
         inet_ctl_sock_destroy(sctp_ctl_sock);
 err_ctl_sock_init:
         sctp_v6_protosw_exit();
@@ -1335,7 +1334,6 @@ err_protosw_init:
         sctp_v4_pf_exit();
         sctp_v6_pf_exit();
         sctp_sysctl_unregister();
-        list_del(&sctp_af_inet.list);
         free_pages((unsigned long)sctp_port_hashtable,
                    get_order(sctp_port_hashsize *
                              sizeof(struct sctp_bind_hashbucket)));
@@ -1383,7 +1381,6 @@ SCTP_STATIC __exit void sctp_exit(void)
         sctp_v4_pf_exit();
 
         sctp_sysctl_unregister();
-        list_del(&sctp_af_inet.list);
 
         free_pages((unsigned long)sctp_assoc_hashtable,
                    get_order(sctp_assoc_hashsize *