block: don't allow the same type rq_qos add more than once
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 v5.15.61 by commit 0b7f5d7a4d2a72ad9de04ab8ccba2a31904aa638. For more details please see the references link.