xen/netfront: react properly to failing gnttabendforeignaccessref()
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 v5.10.105 by commit 206c8e271ba2630f1d809123945d9c428f93b0f0. For more details please see the references link.