staging: android: ion: Remove lable debugfs_done

When failed to create debug_root, we will go on initail other part of
ion, so we can just info this message to user and do not need a lable
to jump.

Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>