leds: an30259a: Use devm_mutex_init() for mutex initialization

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: leds: an30259a: Use devm_mutex_init() for mutex initialization In this driver LEDs are registered using devm_led_classdev_register() so they are automatically unregistered after module's remove() is done. led_classdev_unregister() calls module's led_set_brightness() to turn off the LEDs and that callback uses mutex which was destroyed already in module's remove() so use devm API instead.

References

• https://git.kernel.org/stable/c/3ead19aa341de89a8c3d88a091d8093ebea622e8
• https://git.kernel.org/stable/c/9dba44460bfca657ca43f03ea9bafa4f9f7dd077
• https://git.kernel.org/stable/c/c382e2e3eccb6b7ca8c7aff5092c1668428e7de6