ACPI / resources: free memory on error in add_region_before()

commit 7bc10388ccdd79b3d20463151a1f8e7a590a775b upstream.

There is a small memory leak on error.

Fixes: 0f1b414d1907 (ACPI / PNP: Avoid conflicting resource reservations)
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 28314ba823202f92b42921c3abbe7ea36ccafd85..3760e9635aeacc0a9bb60bc003056e115ff44a5e 100644 (file)
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -577,8 +577,10 @@ static int add_region_before(u64 start, u64 end, u8 space_id,
                return -ENOMEM;
 
        error = request_range(start, end, space_id, flags, desc);
-       if (error)
+       if (error) {
+               kfree(reg);
                return error;
+       }
 
        reg->start = start;
        reg->end = end;