iwlwifi: first deactivate a queue, then wipe out its data

Doing the opposite is wrong, the SCD wouldn't like someone
to clear its data while the queue is still active.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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

@@ -491,6 +491,8 @@ void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id)
 		return;
 	}
 
+	iwl_txq_set_inactive(trans, txq_id);
+
 	rd_ptr = iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq_id)) & (n_bd - 1);
 	wr_ptr = iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq_id));
 
@@ -500,7 +502,6 @@ void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id)
 	_iwl_write_targ_mem_dwords(trans, stts_addr,
 				   zero_val, ARRAY_SIZE(zero_val));
 
-	iwl_txq_set_inactive(trans, txq_id);
 	IWL_DEBUG_TX_QUEUES(trans, "Deactivate queue %d\n", txq_id);
 }