netdevsim: Fix memory leak of nsimdev->facookie
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 v6.0.10 by commit 207edad5717e0a5709ce8467f0eff41c607835c9, it was introduced in version v5.7 by commit d3cbb907ae57fe5da314b51d949b617b538bdeae. For more details please see the references link.