xen/arm: Fix race in RB-tree based P2M accounting
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 v5.4.204 by commit 5c03cad51b84fb26ccea7fd99130d8ec47949cfc. For more details please see the references link.