The memory allocation function ACPI_ALLOCATE_ZEROED does not guarantee a
successful allocation, but the subsequent code directly dereferences the
pointer that receives it, which may lead to null pointer dereference.

To fix this issue, a null pointer check should be added. If it is null,
return exception code AE_NO_MEMORY.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-24856
• https://bugzilla.openanolis.cn/show_bug.cgi?id=8764