cxl/region: Fix decoder allocation crash
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 v6.0.8 by commit c6813b5610ac53af73edd87a660d23a0511faa47, it was introduced in version v6.0 by commit 384e624bb211b406db40edc900bb51af8bb267d0. For more details please see the references link.