[v2] cpufreq: apple-soc: Prevent null pointer dereference in apple_soc_cpufreq_get_rate()

[Markus Elfring]

> cpufreq_cpu_get_raw() may return NULL if the cpu is not in
> policy->cpus cpu mask and it will cause null pointer dereference.
> Prevent null pointer dereference in apple_soc_cpufreq_get_rate().
…
> ---
>  drivers/cpufreq/apple-soc-cpufreq.c | 3 +++
>  1 file changed, 3 insertions(+)
It can be helpful to provide a corresponding patch version description.
https://lore.kernel.org/all/?q=%22This+looks+like+a+new+version+of+a+previously+submitted+patch%22
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.13-rc5#n310

Regards,
Markus