yam: fix a memory leak in yam_siocdevprivate()
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 v4.19.228 by commit 4bd197ce18329e3725fe3af5bd27daa4256d3ac7, it was introduced in version v4.19 by commit 0781168e23a2fc8dceb989f11fc5b39b3ccacc35. For more details please see the references link.