net: vlan: fix underflow for the real_dev refcnt
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 v5.10.83 by commit 6e800ee43218a56acc93676bbb3d93b74779e555, it was introduced in version v5.10.80 by commit e04a7a84bb77f9cdf4475340fe931389bc72331c. For more details please see the references link.