sctp: return back transport in __sctp_rcv_init_lookup

Prior to this patch, it used a local variable to save the transport that is
looked up by __sctp_lookup_association(), and didn't return it back. But in
sctp_rcv, it is used to initialize chunk->transport. So when hitting this,
even if it found the transport, it was still initializing chunk->transport
with null instead.

This patch is to return the transport back through transport pointer
that is from __sctp_rcv_lookup_harder().

Signed-off-by: Xin Long <[e-mail]>
Acked-by: Marcelo Ricardo Leitner <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/sctp/input.c

···
 	struct sctphdr *sh = sctp_hdr(skb);
 	union sctp_params params;
 	sctp_init_chunk_t *init;
-	struct sctp_transport *transport;
 	struct sctp_af *af;
 
 	/*
···
 
 		af->from_addr_param(paddr, params.addr, sh->source, 0);
 
-		asoc = __sctp_lookup_association(net, laddr, paddr, &transport);
+		asoc = __sctp_lookup_association(net, laddr, paddr, transportp);
 		if (asoc)
 			return asoc;
 	}