sctp: remove return value from sctp_packet_init/config

There is no reason to use this cascading. It doesn't add anything.
Let's remove it and simplify.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index a95915e..9a223d5 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -6032,8 +6032,9 @@ static struct sctp_packet *sctp_ootb_pkt_new(struct net *net,
 	sctp_transport_route(transport, (union sctp_addr *)&chunk->dest,
 			     sctp_sk(net->sctp.ctl_sock));
 
-	packet = sctp_packet_init(&transport->packet, transport, sport, dport);
-	packet = sctp_packet_config(packet, vtag, 0);
+	packet = &transport->packet;
+	sctp_packet_init(packet, transport, sport, dport);
+	sctp_packet_config(packet, vtag, 0);
 
 	return packet;