usb: dwc3: power off usb phy in error path

usb phy was power'ed on but was never power'ed off in the error path.
Fix it.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/core.c

@@ -569,6 +569,8 @@ err2:
 	dwc3_event_buffers_cleanup(dwc);
 
 err1:
+	usb_phy_set_suspend(dwc->usb2_phy, 1);
+	usb_phy_set_suspend(dwc->usb3_phy, 1);
 	dwc3_core_exit(dwc);
 
 err0: