CVE-2025-40156 PM / devfreq: mtk-cci: Fix potential error pointer dereference in probe()

In the Linux kernel, the following vulnerability has been resolved: PM / devfreq: mtk-cci: Fix potential error pointer dereference in probe The drv-sramreg pointer could be set to ERRPTR-EPROBEDEFER which would lead to a error pointer dereference. Use ISERRORNULL to check that the pointer is vali...