[PATCH 5.10 0/1] mt76: move mt76_init_tx_queue in common code

Svace has identified unchecked return value of mt7615_init_tx_queue function in 5.10 branch, even though it makes sense to track it instead. This issue is fixed in upstream version by Lorenzo's patch.

The same patch can be cleanly applied to the 5.10 branch.

Found by Linux Verification Center (linuxtesting.org) with SVACE.