[IPSEC]: xfrm audit hook misplaced in pfkey_delete and xfrm_del_sa

Inside pfkey_delete and xfrm_del_sa the audit hooks were not called if
there was any permission/security failures in attempting to do the del
operation (such as permission denied from security_xfrm_state_delete).
This patch moves the audit hook to the exit path such that all failures
(and successes) will actually get audited.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Venkat Yekkirala <vyekkirala@trustedcs.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/key/af_key.c

@@ -1467,9 +1467,6 @@ static int pfkey_delete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
 
 	err = xfrm_state_delete(x);
 
-	xfrm_audit_log(audit_get_loginuid(current->audit_context), 0,
-		       AUDIT_MAC_IPSEC_DELSA, err ? 0 : 1, NULL, x);
-
 	if (err < 0)
 		goto out;
 
@@ -1478,6 +1475,8 @@ static int pfkey_delete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
 	c.event = XFRM_MSG_DELSA;
 	km_state_notify(x, &c);
 out:
+	xfrm_audit_log(audit_get_loginuid(current->audit_context), 0,
+		       AUDIT_MAC_IPSEC_DELSA, err ? 0 : 1, NULL, x);
 	xfrm_state_put(x);
 
 	return err;

net/xfrm/xfrm_user.c

@@ -530,9 +530,6 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	err = xfrm_state_delete(x);
 
-	xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
-		       AUDIT_MAC_IPSEC_DELSA, err ? 0 : 1, NULL, x);
-
 	if (err < 0)
 		goto out;
 
@@ -542,6 +539,8 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
 	km_state_notify(x, &c);
 
 out:
+	xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
+		       AUDIT_MAC_IPSEC_DELSA, err ? 0 : 1, NULL, x);
 	xfrm_state_put(x);
 	return err;
 }