CVE-2024-53231 cpufreq: CPPC: Fix possible null-ptr-deref for cpufreq_cpu_get_raw()

In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix possible null-ptr-deref for cpufreqcpugetraw cpufreqcpugetraw may return NULL if the cpu is not in policy-cpus cpu mask and it will cause null pointer dereference...