GSD-2022-1003830 iio: dummy: iio_simple_dummy: check the return value of kstrdup()

iio: dummy: iiosimpledummy: check the return value of kstrdup This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.247 by commit...