qcacmn: Free Tx ME pool in detach path

Tx ME descriptors used for Tx Multicast enhancement are not freed
in pdev detach path causing memory leak. Fix this by freeing
them in pdev detach path.

Change-Id: I902e7a829495871e3d0013a9942f86c02bbba80e
CRs-Fixed: 2168524

dp/wifi3.0/dp_tx.c

@@ -2718,7 +2718,7 @@ QDF_STATUS dp_tx_pdev_attach(struct dp_pdev *pdev)
  */
 QDF_STATUS dp_tx_pdev_detach(struct dp_pdev *pdev)
 {
-	/* What should do here? */
+	dp_tx_me_exit(pdev);
 	return QDF_STATUS_SUCCESS;
 }
 

dp/wifi3.0/dp_tx.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -175,6 +175,14 @@ static inline void dp_non_std_tx_comp_free_buff(struct dp_tx_desc_s *tx_desc,
 void dp_tx_mec_handler(struct dp_vdev *vdev, uint8_t *status);
 #endif
 
+#ifdef ATH_SUPPORT_IQUE
+void dp_tx_me_exit(struct dp_pdev *pdev);
+#else
+static inline void dp_tx_me_exit(struct dp_pdev *pdev)
+{
+	return;
+}
+#endif
 
 #ifdef FEATURE_PERPKT_INFO
 QDF_STATUS

dp/wifi3.0/dp_tx_me.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -118,7 +118,7 @@ dp_tx_me_alloc_descriptor(struct cdp_pdev *pdev_handle)
  *
  * Return:void
  */
-static inline void
+void
 dp_tx_me_exit(struct dp_pdev *pdev)
 {
 	/* Add flow control buffer count */