char: moxa: call disable_pci_device() if pci_probe() failed

index 107b0bd..4d81c2b 100644
@@ -939,11 +939,6 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev,
 	int board_type = ent->driver_data;
 	int retval;
 
-	retval = pci_enable_device(pdev);
-	if (retval) {
-		dev_err(&pdev->dev, "can't enable pci device\n");
-		goto err;
-	}
 
 	for (i = 0; i < MAX_BOARDS; i++)
 		if (moxa_boards[i].basemem = NULL)

@@ -956,16 +951,23 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev,
 		goto err;
 	}
 
+	retval = pci_enable_device(pdev);
+	if (retval) {
+		dev_err(&pdev->dev, "can't enable pci device\n");
+		goto err;
+	}
+
 	board = &moxa_boards[i];
 
 	retval = pci_request_region(pdev, 2, "moxa-base");
 	if (retval) {
 		dev_err(&pdev->dev, "can't request pci region 2\n");
-		goto err;
+		goto err_disable;
 	}
 
 	board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000);
 	if (board->basemem = NULL) {
+		retval = -ENOMEM;
 		dev_err(&pdev->dev, "can't remap io space 2\n");
 		goto err_reg;
 	}

@@ -1001,6 +1003,8 @@ err_base:
 	board->basemem = NULL;
 err_reg:
 	pci_release_region(pdev, 2);
+err_disable:
+	pci_disable_device(pdev);
 err:
 	return retval;
 }