[PATCH v2] platform/x86: Fix memory leaks in build_tokens_sysfs()

[Dan Carpenter <dan.carpenter@oracle.com>]

We're freeing "value_name" which is NULL, so that's a no-op, but we
intended to free "location_name" instead.  And then we don't free the
names in token_location_attrs[0] and token_value_attrs[0].

Fixes: 33b9ca1e53b4 ("platform/x86: dell-smbios: Add a sysfs interface for SMBIOS tokens")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: style changes (move from a for loop to a while loop) and this driver
    has been renamed.

diff --git a/drivers/platform/x86/dell-smbios-base.c b/drivers/platform/x86/dell-smbios-base.c
index 2485c80a9fdd..ec31d149f82e 100644
--- a/drivers/platform/x86/dell-smbios-base.c
+++ b/drivers/platform/x86/dell-smbios-base.c
@@ -514,7 +514,7 @@ static int build_tokens_sysfs(struct platform_device *dev)
 		continue;
 
 loop_fail_create_value:
-		kfree(value_name);
+		kfree(location_name);
 		goto out_unwind_strings;
 	}
 	smbios_attribute_group.attrs = token_attrs;
@@ -525,7 +525,7 @@ static int build_tokens_sysfs(struct platform_device *dev)
 	return 0;
 
 out_unwind_strings:
-	for (i = i-1; i > 0; i--) {
+	while (--i >= 0) {
 		kfree(token_location_attrs[i].attr.name);
 		kfree(token_value_attrs[i].attr.name);
 	}