CVE-2022-48975 gpiolib: fix memory leak in gpiochip_setup_dev()

In the Linux kernel, the following vulnerability has been resolved: gpiolib: fix memory leak in gpiochipsetupdev Here is a backtrace report about memory leak detected in gpiochipsetupdev: unreferenced object 0xffff88810b406400 size 512: comm "python3", pid 1682, jiffies 4295346908 age 24.090s...