qcacmn: Fix the issues pointed out by KW in the regulatory module

Fix the issues pointed out by KW :

1) https://kwdbprod16.qualcomm.com:8070/review/insight-review.html#
   issuedetails_goto:problemid=222576,project=CRM_NHSS_QSDK_11_5_P

   Initialize dbg_id in reg_process_afc_power_event.

2) https://kwdbprod16.qualcomm.com:8070/review/insight-review.html#
   issuedetails_goto:problemid=222579,project=CRM_NHSS_QSDK_11_5_P

   In ucfg_reg_get_partial_afc_req_info, add a sanity check for afc_req
   to prevent NULL pointer dereference.

3) https://kwdbprod16.qualcomm.com:8070/review/insight-review.html#
   issuedetails_goto:problemid=222580,project=CRM_NHSS_QSDK_11_5_P

   Add a sanity check for afc_chan_obj to prevent NULL pointer
   dereference.

Change-Id: I0481fda6d08590312a863a33a1823a0b07fa194e
CRs-Fixed: 3043280

umac/regulatory/core/src/reg_build_chan_list.c

@@ -2929,6 +2929,11 @@ reg_process_afc_power_event(struct afc_regulatory_info *afc_info)
 	else
 		pdev_id = phy_id;
 
+	if (soc_reg->offload_enabled)
+		dbg_id = WLAN_REGULATORY_NB_ID;
+	else
+		dbg_id = WLAN_REGULATORY_SB_ID;
+
 	reg_debug("process reg afc master chan list");
 	this_mchan_params = &soc_reg->mas_chan_params[phy_id];
 	afc_mas_chan_list = this_mchan_params->mas_chan_list_6g_afc;

umac/regulatory/dispatcher/src/wlan_reg_ucfg_api.c

@@ -265,7 +265,11 @@ QDF_STATUS ucfg_reg_get_partial_afc_req_info(
 	QDF_STATUS status;
 
 	status = reg_get_partial_afc_req_info(pdev, afc_req);
-	if (status == QDF_STATUS_SUCCESS && afc_req)
+
+	if (!afc_req)
+		return QDF_STATUS_E_NOMEM;
+
+	if (status == QDF_STATUS_SUCCESS)
 		reg_dmn_set_afc_req_id(*afc_req, req_id);
 
 	return status;

wmi/src/wmi_unified_tlv.c

@@ -13132,6 +13132,9 @@ static void copy_power_event(struct afc_regulatory_info *afc_info,
 		afc_chan_info = qdf_mem_malloc(power_info->num_chan_objs *
 					       sizeof(*afc_chan_info));
 
+		if (!afc_chan_info)
+			return;
+
 		copy_afc_chan_obj_info(afc_chan_info,
 				       power_info->num_chan_objs,
 				       channel_info_hdr,