net: mvneta: Fix an out of bounds check
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 v5.4.227 by commit 08bf219d62f5dbebad1f2162c23ef3da1f6dc31a, it was introduced in version v5.4.227 by commit eec1fc21edc2bb99c9e66cf66f0b5d4d643fbb50. For more details please see the references link.