mptcp: move subflow cleanup in mptcpdestroycommon()
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 v5.19.4 by commit 6139039c8fc5c9dbcdc3ad389b9a6d0cacb4d693, it was introduced in version v5.11 by commit e16163b6e2b720fb74e5af758546f6dad27e6c9e. For more details please see the references link.