usb: dwc3: reset pending status flag in error case

If we stall and restart we have to reset also this flag to 0 as there is
nothing pending anymore.
Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/dwc3/ep0.c

@@ -224,6 +224,7 @@ static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
 		dwc3_gadget_giveback(dep, req, -ECONNRESET);
 	}
 
+	dwc->ep0_status_pending = 0;
 	dwc->ep0state = EP0_SETUP_PHASE;
 	dwc3_ep0_out_start(dwc);
 }