staging: greybus: uart: fix tty use after free
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 v5.10.70 by commit b9e697e60ce9890e9258a73eb061288e7d68e5e6, it was introduced in version v4.9 by commit a18e15175708d39abbe9746ddc3479466b7800c3. For more details please see the references link.