selinux: Shuffle the sk_security_struct alloc and free routines

The sk_alloc_security() and sk_free_security() functions were only being
called by the selinux_sk_alloc_security() and selinux_sk_free_security()
functions so we just move the guts of the alloc/free routines to the
callers and eliminate a layer of indirection.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

security/selinux/hooks.c

@@ -279,32 +279,6 @@ static void superblock_free_security(struct super_block *sb)
 	kfree(sbsec);
 }
 
-static int sk_alloc_security(struct sock *sk, int family, gfp_t priority)
-{
-	struct sk_security_struct *sksec;
-
-	sksec = kzalloc(sizeof(*sksec), priority);
-	if (!sksec)
-		return -ENOMEM;
-
-	sksec->peer_sid = SECINITSID_UNLABELED;
-	sksec->sid = SECINITSID_UNLABELED;
-	sk->sk_security = sksec;
-
-	selinux_netlbl_sk_security_reset(sksec);
-
-	return 0;
-}
-
-static void sk_free_security(struct sock *sk)
-{
-	struct sk_security_struct *sksec = sk->sk_security;
-
-	sk->sk_security = NULL;
-	selinux_netlbl_sk_security_free(sksec);
-	kfree(sksec);
-}
-
 /* The security server must be initialized before
    any labeling or access decisions can be provided. */
 extern int ss_initialized;
@@ -4224,12 +4198,27 @@ static int selinux_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *
 
 static int selinux_sk_alloc_security(struct sock *sk, int family, gfp_t priority)
 {
-	return sk_alloc_security(sk, family, priority);
+	struct sk_security_struct *sksec;
+
+	sksec = kzalloc(sizeof(*sksec), priority);
+	if (!sksec)
+		return -ENOMEM;
+
+	sksec->peer_sid = SECINITSID_UNLABELED;
+	sksec->sid = SECINITSID_UNLABELED;
+	selinux_netlbl_sk_security_reset(sksec);
+	sk->sk_security = sksec;
+
+	return 0;
 }
 
 static void selinux_sk_free_security(struct sock *sk)
 {
-	sk_free_security(sk);
+	struct sk_security_struct *sksec = sk->sk_security;
+
+	sk->sk_security = NULL;
+	selinux_netlbl_sk_security_free(sksec);
+	kfree(sksec);
 }
 
 static void selinux_sk_clone_security(const struct sock *sk, struct sock *newsk)