net/smc: Fix NULL pointer dereferencing in smcvlanby_tcpsk()
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 v5.15.6 by commit bb851d0fb02547d03cd40106b5f2391c4fed6ed1, it was introduced in version v4.18 by commit cb9d43f6775457cac75544bc4197f26ac2b6f294. For more details please see the references link.