iwlwifi: pcie: allocate shorter TX queues for 22000 devices

When support for shorter TX queues was introduced, it
didn't include the actual allocation of shorter queue,
which is the main motive for the change.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c

@@ -993,7 +993,7 @@ static void iwl_pcie_gen2_txq_free_memory(struct iwl_trans *trans,
 	/* De-alloc circular buffer of TFDs */
 	if (txq->tfds) {
 		dma_free_coherent(dev,
-				  trans_pcie->tfd_size * TFD_QUEUE_SIZE_MAX,
+				  trans_pcie->tfd_size * txq->n_window,
 				  txq->tfds, txq->dma_addr);
 		dma_free_coherent(dev,
 				  sizeof(*txq->first_tb_bufs) * txq->n_window,

drivers/net/wireless/intel/iwlwifi/pcie/tx.c

@@ -495,6 +495,9 @@ int iwl_pcie_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq,
 	if (WARN_ON(txq->entries || txq->tfds))
 		return -EINVAL;
 
+	if (trans->cfg->use_tfh)
+		tfd_sz = trans_pcie->tfd_size * slots_num;
+
 	timer_setup(&txq->stuck_timer, iwl_pcie_txq_stuck_timer, 0);
 	txq->trans_pcie = trans_pcie;