Set connected mode after setting remote address

ortp: according to oRTP documentation rtp_session_set_connected_mode()
uses the address set by rtp_session_set_remote_addr() - move the
function call accordingly.

Fixes: OS#1661
diff --git a/src/trau/osmo_ortp.c b/src/trau/osmo_ortp.c
index 5ab5bf5..3313798 100644
--- a/src/trau/osmo_ortp.c
+++ b/src/trau/osmo_ortp.c
@@ -390,16 +390,17 @@
 		     "set remote %s:%u\n", ip, port);
 		return 0;
 	}
+
+	rc = rtp_session_set_remote_addr(rs->sess, ip, port);
+	if (rc < 0)
+		return rc;
+
 	/* enable the use of connect() so later getsockname() will
 	 * actually return the IP address that was chosen for the local
 	 * sid of the connection */
 	rtp_session_set_connected_mode(rs->sess, 1);
 	rs->flags &= ~OSMO_RTP_F_DISABLED;
 
-	rc = rtp_session_set_remote_addr(rs->sess, ip, port);
-	if (rc < 0)
-		return rc;
-
 	if (rs->flags & OSMO_RTP_F_POLL)
 		return rc;
 	else