USB: EHCI: ehci-mv: Fix unused assignment in mv_ehci_probe()

Delete unused initialized value, because 'retval' will be assigined
by the function mv_ehci_enable(). And delete the extra blank lines.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200508142136.4232-1-tangbin@cmss.chinamobile.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-mv.c

@@ -108,7 +108,7 @@ static int mv_ehci_probe(struct platform_device *pdev)
 	struct ehci_hcd *ehci;
 	struct ehci_hcd_mv *ehci_mv;
 	struct resource *r;
-	int retval = -ENODEV;
+	int retval;
 	u32 offset;
 	u32 status;
 
@@ -143,8 +143,6 @@ static int mv_ehci_probe(struct platform_device *pdev)
 		goto err_put_hcd;
 	}
 
-
-
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ehci_mv->base = devm_ioremap_resource(&pdev->dev, r);
 	if (IS_ERR(ehci_mv->base)) {