CVE-2022-49621 cpufreq: pmac32-cpufreq: Fix refcount leak bug

In the Linux kernel, the following vulnerability has been resolved: cpufreq: pmac32-cpufreq: Fix refcount leak bug In pmaccpufreqinitMacRISC3, we need to add corresponding ofnodeput for the three node pointers whose refcount have been incremented by offindnodebyname...