cxl: fix possible null-ptr-deref in cxlpciinit_afu|adapter()
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 v5.10.163 by commit 0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec, it was introduced in version v3.18 by commit f204e0b8cedd7da1dfcfd05ed6b7692737e24029. For more details please see the references link.