hulk inclusion
category: feature
bugzilla: 14369
CVE: NA
-------------------

As add_device becomes more likely to fail when adding new features, let it
clean up behind itself. The iommu_bus_init function does call
remove_device on error, but other sites (e.g. of_iommu) do not.

Don't free level-2 stream tables because we'd have to track if we
allocated each of them or if they are used by other endpoints. It's not
worth the hassle since they are managed resources.
Signed-off-by: NJean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: NFang Lijun <fanglijun3@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Reviewed-by: NZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>