qcacld-3.0: Fix KW issues in ipa files

Fix KW issues in ipa files, add ipa_obj null check before use.

Change-Id: Ie6f69fda7d50b8ece9917db43a838e0f3852393f
CRs-Fixed: 2979119

components/ipa/core/src/wlan_ipa_core.c

@@ -1903,6 +1903,11 @@ bool wlan_ipa_is_tx_pending(struct wlan_ipa_priv *ipa_ctx)
 	uint64_t diff_ms = 0;
 	uint64_t current_ticks = 0;
 
+	if (!ipa_ctx) {
+		ipa_err("IPA private context is NULL");
+		return false;
+	}
+
 	if (!qdf_atomic_read(&ipa_ctx->waiting_on_pending_tx)) {
 		ipa_debug("nothing pending");
 		return false;

components/ipa/dispatcher/src/wlan_ipa_tgt_api.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018, 2020-2021 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
@@ -35,6 +35,11 @@ QDF_STATUS tgt_ipa_uc_offload_enable_disable(struct wlan_objmgr_pdev *pdev,
 	IPA_ENTER();
 
 	ipa_obj = ipa_pdev_get_priv_obj(pdev);
+	if (!ipa_obj) {
+		ipa_err("IPA object is NULL");
+		return QDF_STATUS_E_INVAL;
+	}
+
 	psoc = wlan_pdev_get_psoc(pdev);
 
 	if (ipa_obj->ipa_tx_op)
@@ -55,6 +60,11 @@ tgt_ipa_intrabss_enable_disable(struct wlan_objmgr_pdev *pdev,
 	IPA_ENTER();
 
 	ipa_obj = ipa_pdev_get_priv_obj(pdev);
+	if (!ipa_obj) {
+		ipa_err("IPA object is NULL");
+		return QDF_STATUS_E_INVAL;
+	}
+
 	psoc = wlan_pdev_get_psoc(pdev);
 
 	if (ipa_obj->ipa_intrabss_op)