qcacld-3.0: Avoid recovery during driver unloading

During wlan unloading, target failure is ignored, no recovery
will happen, refer function ol_target_failure

During wlan unloading, cds_cfg may be freed, can't get
cds_is_self_recovery_enabled state correctly

Change-Id: I321d4029f299ef2eb7a6316faaed90f62e091b4e
CRs-Fixed: 2224058

core/cds/src/cds_api.c

@@ -1778,6 +1778,11 @@ static void cds_trigger_recovery_work(void *param)
 	qdf_runtime_lock_t rtl;
 	qdf_device_t qdf;
 
+	if (cds_is_driver_unloading()) {
+		cds_err("Unloading in progress; ignoring recovery trigger");
+		return;
+	}
+
 	if (cds_is_driver_recovering()) {
 		cds_err("Recovery in progress; ignoring recovery trigger");
 		return;