iwlwifi: mvm: refactor iwl_mvm_flush_no_vif

This function is very indented and hard to read.
Refactor it.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

@@ -4002,6 +4002,8 @@ static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
 
 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
 {
+	int i;
+
 	if (drop) {
 		if (iwl_mvm_has_new_tx_api(mvm))
 			/* TODO new tx api */
@@ -4009,18 +4011,20 @@ static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
 				  "Need to implement flush TX queue\n");
 		else
 			iwl_mvm_flush_tx_path(mvm,
-				iwl_mvm_flushable_queues(mvm) & queues,
-				0);
-	} else {
-		if (iwl_mvm_has_new_tx_api(mvm)) {
-			struct ieee80211_sta *sta;
-			int i;
+				iwl_mvm_flushable_queues(mvm) & queues, 0);
+		return;
+	}
 
-			mutex_lock(&mvm->mutex);
+	if (!iwl_mvm_has_new_tx_api(mvm)) {
+		iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
+		return;
+	}
 
+	mutex_lock(&mvm->mutex);
 	for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
-				sta = rcu_dereference_protected(
-						mvm->fw_id_to_mac_id[i],
+		struct ieee80211_sta *sta;
+
+		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 						lockdep_is_held(&mvm->mutex));
 		if (IS_ERR_OR_NULL(sta))
 			continue;
@@ -4028,13 +4032,7 @@ static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
 		iwl_mvm_wait_sta_queues_empty(mvm,
 					      iwl_mvm_sta_from_mac80211(sta));
 	}
-
 	mutex_unlock(&mvm->mutex);
-		} else {
-			iwl_trans_wait_tx_queues_empty(mvm->trans,
-						       queues);
-		}
-	}
 }
 
 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,