ACPICA: Fix reference count issues for DdbHandle object

Fix a problem where the DdbHandle could be prematurely deleted,
possibly causing a fault.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/acpica/exconfig.c

@@ -229,6 +229,8 @@ acpi_ex_load_table_op(struct acpi_walk_state *walk_state,
 				       walk_state);
 		if (ACPI_FAILURE(status)) {
 			(void)acpi_ex_unload_table(ddb_handle);
+
+			acpi_ut_remove_reference(ddb_handle);
 			return_ACPI_STATUS(status);
 		}
 	}
@@ -454,6 +456,10 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
 		return_ACPI_STATUS(status);
 	}
 
+	/* Remove the reference by added by acpi_ex_store above */
+
+	acpi_ut_remove_reference(ddb_handle);
+
 	/* Invoke table handler if present */
 
 	if (acpi_gbl_table_handler) {
@@ -530,8 +536,5 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
 	(void)acpi_tb_release_owner_id(table_index);
 	acpi_tb_set_table_loaded_flag(table_index, FALSE);
 
-	/* Table unloaded, remove a reference to the ddb_handle object */
-
-	acpi_ut_remove_reference(ddb_handle);
 	return_ACPI_STATUS(AE_OK);
 }