usb: gadget: dwc2_udc_otg: return zero when reset property is not present

If reset DT property is not present, -ENOENT is returned.
But it's not really error.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c
index d20ce61..8a8e217 100644
--- a/drivers/usb/gadget/dwc2_udc_otg.c
+++ b/drivers/usb/gadget/dwc2_udc_otg.c
@@ -1048,7 +1048,7 @@
 	int ret;
 
 	ret = reset_get_bulk(dev, resets);
-	if (ret == -ENOTSUPP)
+	if (ret == -ENOTSUPP || ret == -ENOENT)
 		return 0;
 
 	if (ret)