[SCSI] libfc: have rport_create do a lookup for pre-existing rports first

For future discovery patches, change rport_create to return a previously
created rport_priv that has the FC_ID as long as it isn't in deleted state.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/libfc/fc_rport.c

@@ -98,6 +98,10 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport,
 {
 	struct fc_rport_priv *rdata;
 
+	rdata = lport->tt.rport_lookup(lport, ids->port_id);
+	if (rdata)
+		return rdata;
+
 	rdata = kzalloc(sizeof(*rdata), GFP_KERNEL);
 	if (!rdata)
 		return NULL;