vdpasim: fix memory leak when freeing IOTLBs
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 v6.0.19 by commit 54b210c90d2803a9f1c8fd2f0d08e90172e9a06d, it was introduced in version v5.19 by commit bda324fd037a6b0d44da5699574ce741ca161bc4. For more details please see the references link.