usb: dwc3: make dwc3_get_device_id() return the id

We always return zero instead of the id we found.

Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/core.c

@@ -86,7 +86,7 @@ int dwc3_get_device_id(void)
 		id = -ENOMEM;
 	}
 
-	return 0;
+	return id;
 }
 EXPORT_SYMBOL_GPL(dwc3_get_device_id);