vfio/type1: fix vaddr_get_pfns() return in vfio_pin_page_external()
vaddr_get_pfns() now returns the positive number of pfns successfully
gotten instead of zero. vfio_pin_page_external() might return 1 to
vfio_iommu_type1_pin_pages(), which will treat it as an error, if
vaddr_get_pfns() is successful but vfio_pin_page_external() doesn't
reach vfio_lock_acct().
Fix it up in vfio_pin_page_external(). Found by inspection.
Fixes:
be16c1fd99f4 ("vfio/type1: Change success value of vaddr_get_pfn()")
Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Message-Id: <
20210308172452.38864-1-daniel.m.jordan@oracle.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>