btrfs: cleanup duplicate return value in insert_inline_extent

The pattern when err is used for function exit and ret is used for
return values of callees is not used here.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-06-15 19:09:51 +02:00
commit 79b4f4c605