usb: dwc2: gadget: abort core init if core_reset fails

No point of continue with initialization if core is not in a sane
state.

Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc2/gadget.c

@@ -2287,7 +2287,8 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
 	u32 val;
 
 	if (!is_usb_reset)
-		dwc2_hsotg_corereset(hsotg);
+		if (dwc2_hsotg_corereset(hsotg))
+			return;
 
 	/*
 	 * we must now enable ep0 ready for host detection and then