[SCSI] libfc: call fc_remote_port_chkready under the host lock.

The rport port state and flags are set under the host lock,
so this patch calls fc_remote_port_chkready with the host lock
held like is also done in the other fc drivers.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/libfc/fc_fcp.c

@@ -1765,14 +1765,14 @@ int fc_queuecommand(struct scsi_cmnd *sc_cmd, void (*done)(struct scsi_cmnd *))
 	struct fcoe_dev_stats *stats;
 
 	lport = shost_priv(sc_cmd->device->host);
-	spin_unlock_irq(lport->host->host_lock);
 
 	rval = fc_remote_port_chkready(rport);
 	if (rval) {
 		sc_cmd->result = rval;
 		done(sc_cmd);
-		goto out;
+		return 0;
 	}
+	spin_unlock_irq(lport->host->host_lock);
 
 	if (!*(struct fc_remote_port **)rport->dd_data) {
 		/*