mt76: fix potential DMA mapping leak
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 v5.12.4 by commit 91b9548d413fda488ea853cd1b9f59b572db3a0c, it was introduced in version v5.10 by commit 27d5c528a7ca08dcd44877fdd9fc08b76630bf77. For more details please see the references link.