[SCTP]: sctp_process_init() and sctp_source() switched to net-endian.

both are done in one go since almost always we have result of
the latter immediately passed to the former.  Possibly non-obvious
note: sctp_process_param() is endian-agnostic

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/endpointola.c

@@ -346,10 +346,8 @@ static void sctp_endpoint_bh_rcv(struct sctp_endpoint *ep)
 		 * COOKIE-ECHO chunk.
 		 */
 		if (NULL == chunk->asoc) {
-			union sctp_addr tmp;
-			flip_to_n(&tmp, sctp_source(chunk));
 			asoc = sctp_endpoint_lookup_assoc(ep,
-							  &tmp,
+							  sctp_source(chunk),
 							  &transport);
 			chunk->asoc = asoc;
 			chunk->transport = transport;