Validate Wake-on-LAN (WoL) options in `lan78xx_set_wol` before calling
`usb_autopm_get_interface`. This prevents USB autopm refcounting issues
and ensures the adapter can properly enter autosuspend when invalid WoL
options are provided.
Fixes: eb9ad088f966 ("lan78xx: Check for supported Wake-on-LAN modes")
Cc: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>