sctp: remove unnecessary asoc in sctp_has_association

After Commit dae399d7 ("sctp: hold transport instead of assoc
when lookup assoc in rx path"), it put transport instead of asoc
in sctp_has_association. Variable 'asoc' is not used any more.

So this patch is to remove it, while at it,  it also changes the
return type of sctp_has_association to bool, and does the same
for it's caller sctp_endpoint_is_peeled_off.
Signed-off-by: NXin Long <lucien.xin@gmail.com>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/sctp/structs.h

@@ -1341,12 +1341,12 @@ struct sctp_association *sctp_endpoint_lookup_assoc(
 	const struct sctp_endpoint *ep,
 	const union sctp_addr *paddr,
 	struct sctp_transport **);
-int sctp_endpoint_is_peeled_off(struct sctp_endpoint *,
-				const union sctp_addr *);
+bool sctp_endpoint_is_peeled_off(struct sctp_endpoint *ep,
+				 const union sctp_addr *paddr);
 struct sctp_endpoint *sctp_endpoint_is_match(struct sctp_endpoint *,
 					struct net *, const union sctp_addr *);
-int sctp_has_association(struct net *net, const union sctp_addr *laddr,
-			 const union sctp_addr *paddr);
+bool sctp_has_association(struct net *net, const union sctp_addr *laddr,
+			  const union sctp_addr *paddr);
 
 int sctp_verify_init(struct net *net, const struct sctp_endpoint *ep,
 		     const struct sctp_association *asoc,

net/sctp/endpointola.c

@@ -349,8 +349,8 @@ struct sctp_association *sctp_endpoint_lookup_assoc(
 /* Look for any peeled off association from the endpoint that matches the
  * given peer address.
  */
-int sctp_endpoint_is_peeled_off(struct sctp_endpoint *ep,
-				const union sctp_addr *paddr)
+bool sctp_endpoint_is_peeled_off(struct sctp_endpoint *ep,
+				 const union sctp_addr *paddr)
 {
 	struct sctp_sockaddr_entry *addr;
 	struct sctp_bind_addr *bp;
@@ -362,10 +362,10 @@ int sctp_endpoint_is_peeled_off(struct sctp_endpoint *ep,
 	 */
 	list_for_each_entry(addr, &bp->address_list, list) {
 		if (sctp_has_association(net, &addr->a, paddr))
-			return 1;
+			return true;
 	}
 
-	return 0;
+	return false;
 }
 
 /* Do delayed input processing.  This is scheduled by sctp_rcv().

net/sctp/input.c

@@ -1010,19 +1010,18 @@ struct sctp_association *sctp_lookup_association(struct net *net,
 }
 
 /* Is there an association matching the given local and peer addresses? */
-int sctp_has_association(struct net *net,
-			 const union sctp_addr *laddr,
-			 const union sctp_addr *paddr)
+bool sctp_has_association(struct net *net,
+			  const union sctp_addr *laddr,
+			  const union sctp_addr *paddr)
 {
-	struct sctp_association *asoc;
 	struct sctp_transport *transport;
 
-	if ((asoc = sctp_lookup_association(net, laddr, paddr, &transport))) {
+	if (sctp_lookup_association(net, laddr, paddr, &transport)) {
 		sctp_transport_put(transport);
-		return 1;
+		return true;
 	}
 
-	return 0;
+	return false;
 }
 
 /*