r8152: fix unknown device for choose_configuration

For the unknown device, rtl8152_cfgselector_choose_configuration()
should return a negative value. Then, usb_choose_configuration() would
set a configuration for CDC ECM or NCM mode. Otherwise, there is no
usb interface driver for the device.

Fixes: aa4f2b3 ("r8152: Choose our USB config with choose_configuration() rather than probe()")
Signed-off-by: Hayes Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: hayesorz

drivers/net/usb/r8152.c

@@ -10078,7 +10078,7 @@ static int rtl8152_cfgselector_choose_configuration(struct usb_device *udev)
 	 * driver supports it.
 	 */
 	if (__rtl_get_hw_ver(udev) == RTL_VER_UNKNOWN)
-		return 0;
+		return -ENODEV;
 
 	/* The vendor mode is not always config #1, so to find it out. */
 	c = udev->config;