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>

include/net/sctp/structs.h

@@ -722,10 +722,9 @@ struct sctp_packet {
 	    ipfragok:1;		/* So let ip fragment this packet */
 };
 
-struct sctp_packet *sctp_packet_init(struct sctp_packet *,
-				     struct sctp_transport *,
+void sctp_packet_init(struct sctp_packet *, struct sctp_transport *,
 		      __u16 sport, __u16 dport);
-struct sctp_packet *sctp_packet_config(struct sctp_packet *, __u32 vtag, int);
+void sctp_packet_config(struct sctp_packet *, __u32 vtag, int);
 sctp_xmit_t sctp_packet_transmit_chunk(struct sctp_packet *,
 				       struct sctp_chunk *, int, gfp_t);
 sctp_xmit_t sctp_packet_append_chunk(struct sctp_packet *,

net/sctp/output.c

@@ -81,8 +81,8 @@ static void sctp_packet_reset(struct sctp_packet *packet)
 /* Config a packet.
  * This appears to be a followup set of initializations.
  */
-struct sctp_packet *sctp_packet_config(struct sctp_packet *packet,
-				       __u32 vtag, int ecn_capable)
+void sctp_packet_config(struct sctp_packet *packet, __u32 vtag,
+			int ecn_capable)
 {
 	struct sctp_transport *tp = packet->transport;
 	struct sctp_association *asoc = tp->asoc;
@@ -123,12 +123,10 @@ struct sctp_packet *sctp_packet_config(struct sctp_packet *packet,
 		if (chunk)
 			sctp_packet_append_chunk(packet, chunk);
 	}
-
-	return packet;
 }
 
 /* Initialize the packet structure. */
-struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
+void sctp_packet_init(struct sctp_packet *packet,
 		      struct sctp_transport *transport,
 		      __u16 sport, __u16 dport)
 {
@@ -151,8 +149,6 @@ struct sctp_packet *sctp_packet_init(struct sctp_packet *packet,
 	packet->overhead = overhead;
 	sctp_packet_reset(packet);
 	packet->vtag = 0;
-
-	return packet;
 }
 
 /* Free a packet.  */

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;