qcacmn: Change return type to QDF_STATUS

wmi_unified_register_event return QDF_STATUS
Handle same return type in caller function

CRs-Fixed: 2764185
Change-Id: I18c687ad0564ec70e28cf1f33f26501dda6ee5c5

target_if/dcs/src/target_if_dcs.c

@@ -89,7 +89,7 @@ static int target_if_dcs_interference_event_handler(ol_scn_t scn,
 static QDF_STATUS
 target_if_dcs_register_event_handler(struct wlan_objmgr_psoc *psoc)
 {
-	int ret_val;
+	QDF_STATUS ret_val;
 	struct wmi_unified *wmi_handle;
 
 	if (!psoc) {
@@ -108,10 +108,10 @@ target_if_dcs_register_event_handler(struct wlan_objmgr_psoc *psoc)
 			wmi_dcs_interference_event_id,
 			target_if_dcs_interference_event_handler,
 			WMI_RX_WORK_CTX);
-	if (ret_val)
+	if (QDF_IS_STATUS_ERROR(ret_val))
 		target_if_err("Failed to register dcs interference event cb");
 
-	return qdf_status_from_os_return(ret_val);
+	return ret_val;
 }
 
 static QDF_STATUS