cciss: handler scsi_add_host failure

@@ -691,14 +691,13 @@ static int
 cciss_scsi_detect(int ctlr)
 {
 	struct Scsi_Host *sh;
+	int error;
 
 	sh = scsi_host_alloc(&cciss_driver_template, sizeof(struct ctlr_info *));
 	if (sh == NULL)
-		return 0;
-
+		goto fail;
 	sh->io_port = 0;	// good enough?  FIXME, 
 	sh->n_io_port = 0;	// I don't think we use these two...
-
 	sh->this_id = SELF_SCSI_ID;  
 
 	((struct cciss_scsi_adapter_data_t *) 

@@ -706,10 +705,16 @@ cciss_scsi_detect(int ctlr)
 	sh->hostdata[0] = (unsigned long) hba[ctlr];
 	sh->irq = hba[ctlr]->intr;
 	sh->unique_id = sh->irq;
-	scsi_add_host(sh, &hba[ctlr]->pdev->dev); /* XXX handle failure */
+	error = scsi_add_host(sh, &hba[ctlr]->pdev->dev);
+	if (error)
+		goto fail_host_put;
 	scsi_scan_host(sh);
-
 	return 1;
+
+ fail_host_put:
+	scsi_host_put(sh);
+ fail:
+	return 0;
 }
 
 static void __exit cleanup_cciss_module(void);