mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue

Make ieee80211_tx_h_rate_ctrl() get called on dequeue to improve
performance since it reduces the turnaround time for rate control.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/20210617163113.75815-2-nbd@nbd.name


Signed-off-by: Johannes Berg <johannes.berg@intel.com>