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: If77efc6a5b451bf2cf4acb59d5a2126ce486f02f

target_if/direct_buf_rx/src/target_if_direct_buf_rx_main.c

@@ -2015,7 +2015,7 @@ QDF_STATUS target_if_deinit_dbr_ring(struct wlan_objmgr_pdev *pdev,
 QDF_STATUS target_if_direct_buf_rx_register_events(
 				struct wlan_objmgr_psoc *psoc)
 {
-	int ret;
+	QDF_STATUS ret;
 
 	if (!psoc || !GET_WMI_HDL_FROM_PSOC(psoc)) {
 		direct_buf_rx_err("psoc or psoc->tgt_if_handle is null");
@@ -2028,7 +2028,7 @@ QDF_STATUS target_if_direct_buf_rx_register_events(
 			target_if_direct_buf_rx_rsp_event_handler,
 			WMI_RX_UMAC_CTX);
 
-	if (ret)
+	if (QDF_IS_STATUS_ERROR(ret))
 		direct_buf_rx_debug("event handler not supported, ret=%d", ret);
 
 	return QDF_STATUS_SUCCESS;