iommu/iova: Use rb_entry()

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Geliang Tang 2016-12-19 22:46:58 +08:00 • committed by Joerg Roedel
commit eba484b51b