Revert "qcacld-3.0: Reset to NULL after freeing the memory"

This reverts commit If6a1b2857d14f5fff2f47e541156ce2c27fb33a3

Fix build error caused by missing SMMU change propagation,
where changed tx_comp_base to tx_comp_ring.

Change-Id: Ie845b9da0fa6272dfe95abaaf587a583fb4710b3
CRs-Fixed: 2119811

core/dp/htt/htt_tx.c

@@ -1383,7 +1383,6 @@ free_tx_comp_base:
 							    ipa_uc_tx_rsc.
 							    tx_comp_base),
 							   memctx));
-	pdev->ipa_uc_tx_rsc.tx_comp_ring = NULL;
 free_tx_ce_idx:
 	qdf_mem_free_consistent(pdev->osdev, pdev->osdev->dev,
 				   4,
@@ -1393,8 +1392,6 @@ free_tx_ce_idx:
 							    ipa_uc_tx_rsc.
 							    tx_ce_idx),
 							   memctx));
-	pdev->ipa_uc_tx_rsc.tx_ce_idx = NULL;
-
 	return return_code;
 }
 
@@ -1419,7 +1416,6 @@ int htt_tx_ipa_uc_detach(struct htt_pdev_t *pdev)
 				(&pdev->ipa_uc_tx_rsc.tx_ce_idx),
 				memctx));
 	}
-	pdev->ipa_uc_tx_rsc.tx_ce_idx = NULL;
 
 	if (pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr) {
 		qdf_mem_free_consistent(
@@ -1432,7 +1428,6 @@ int htt_tx_ipa_uc_detach(struct htt_pdev_t *pdev)
 						 tx_comp_base),
 						memctx));
 	}
-	pdev->ipa_uc_tx_rsc.tx_comp_ring = NULL;
 
 	/* Free each single buffer */
 	htt_tx_buf_pool_free(pdev);