diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index eb93c060426f..aaa1de79bccf 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -560,6 +560,9 @@ acpi_table_initrd_override(struct acpi_table_header *existing_table,
 	while (table_offset + ACPI_HEADER_SIZE <= all_tables_size) {
 		table = acpi_os_map_memory(acpi_tables_addr + table_offset,
 					   ACPI_HEADER_SIZE);
+		if (!table)
+			return AE_NO_MEMORY;
+
 		if (table_offset + table->length > all_tables_size) {
 			acpi_os_unmap_memory(table, ACPI_HEADER_SIZE);
 			WARN_ON(1);