linux-imx

vfio: vfio_pci_nvlink2: use a vma helper function

Use a vma helper function to simply code.

Signed-off-by: Peng Hao <richard.peng@oppo.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>