iommu_client: mmap returing wrong cap
iommu_client: mmap returing wrong cap

Signed-off-by: Roni Häcki <ac1438dbed87008d3b9d6c77a0ffddf380f86b06@inf.ethz.ch>

BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish,kishoredbn/barrelfish,kishoredbn/barrelfish,BarrelfishOS/barrelfish