usb: gadget: pxa25x_udc: fix use-before-initialized bug

Fix use-before-initialized bug in pxa25x_udc driver.

Function usb_gadget_register_driver calls udc_disable,
and udc_disable calls pullup_off that uses dev->mach->udc_command.
But dev->mach is initialized in usb_gadget_register_driver after
calling udc_disable. This patch fixes the order of initialization.
Signed-off-by: NAlex Sadovsky <Nable.MainInbox@googlemail.com>

drivers/usb/gadget/pxa25x_udc.c

@@ -1950,11 +1950,11 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	dev->watchdog.period = 5000 * CONFIG_SYS_HZ / 1000000; /* 5 ms */
 	dev->watchdog.function = udc_watchdog;
 
+	dev->mach = &mach_info;
+
 	udc_disable(dev);
 	udc_reinit(dev);
 
-	dev->mach = &mach_info;
-
 	dev->gadget.name = "pxa2xx_udc";
 	retval = driver->bind(&dev->gadget);
 	if (retval) {