vfio: Fix coverity found issues

Overall nothing very serious here. We botch the size of a PCIe capability due to a cut-n-paste error, but nobody has noticed due to the rarity of the capability. A 32bit host could possibly see some overflows attempting to do a DMA map, but all of the parameters are also validated elsewhere, so while this may cause unexepected behavior for the user, there doesn't appear to be any risk to the host. Thanks,

Alex

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Alex Williamson (3):
vfio/pci: Fix sizing of DPA and THP express capabilities vfio/pci: Fix unchecked return value vfio/iommu_type1: Avoid overflow

 drivers/vfio/pci/vfio_pci.c        |    3 ++
 drivers/vfio/pci/vfio_pci_config.c |    7 ++----
 drivers/vfio/vfio_iommu_type1.c    |   45 ++++++++++++++----------------------
 3 files changed, 23 insertions(+), 32 deletions(-)