sctp: fix checkpatch errors with space required or prohibited

fix checkpatch errors while the space is required or prohibited
to the "=,()++..."

Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/input.c b/net/sctp/input.c
index e978235..44f8793 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -119,7 +119,7 @@
 	struct sctp_af *af;
 	struct net *net = dev_net(skb->dev);
 
-	if (skb->pkt_type!=PACKET_HOST)
+	if (skb->pkt_type != PACKET_HOST)
 		goto discard_it;
 
 	SCTP_INC_STATS_BH(net, SCTP_MIB_INSCTPPACKS);
@@ -1055,7 +1055,7 @@
 		if (ch_end > skb_tail_pointer(skb))
 			break;
 
-		switch(ch->type) {
+		switch (ch->type) {
 		    case SCTP_CID_AUTH:
 			    have_auth = chunk_num;
 			    break;