phylib: fix potential use-after-free
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 v4.19.228 by commit 67d271760b037ce0806d687ee6057edc8afd4205, it was introduced in version v4.16 by commit bafbdd527d569c8200521f2f7579f65a044271be. For more details please see the references link.