moxart: fix potential use-after-free on remove path
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.266 by commit e6f580d0b3349646d4ee1ce0057eb273e8fb7e2e. For more details please see the references link.