iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer

...

UBUNTU-CVE-2024-43818

In the Linux kernel, the following vulnerability has been resolved: ASoC: amd: Adjust error handling in case of absent codec device acpigetfirstphysicalnode can return NULL in several cases no such device, ACPI table error, reference count drop to 0, etc. Existing check just emit error message, b...