mt76: mt7615: fix memleak when mt7615_unregister_device()

mt76: mt7615: fix memleak when mt7615_unregister_device()

BugLink: https://bugs.launchpad.net/bugs/1929455
[ Upstream commit 8ab31da7b89f71c4c2defcca989fab7b42f87d71 ]

mt7615_tx_token_put() should get call before mt76_free_pending_txwi().

Fixes: a6275e934605 ("mt76: mt7615: reset token when mac_reset happens")
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>