mac802154: util: fix release queue handling

The semantic of atomic_dec_and_test() is to return true if zero is
reached and we need call ieee802154_wake_queue() when zero is reached.

Fixes: 20a19d1d ("net: mac802154: Bring the ability to hold the transmit queue")
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220613043735.1039895-2-aahringo@redhat.com


Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>