USB: ohci-jz4740: Fix uninitialized variable warning

The ret variable is not initialized in all code paths of the
ohci_jz4740_hub_control function. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci-jz4740.c

@@ -82,7 +82,7 @@ static int ohci_jz4740_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 	u16 wIndex, char *buf, u16 wLength)
 {
 	struct jz4740_ohci_hcd *jz4740_ohci = hcd_to_jz4740_hcd(hcd);
-	int ret;
+	int ret = 0;
 
 	switch (typeReq) {
 	case SetHubFeature: