selftests: iommu: Fix test_cmd_destroy_access() call in user_copy

The test_cmd_destroy_access() should end with a semicolon, so add one.
There is a test_ioctl_destroy(ioas_id) following already, so drop one.

Fixes: 57f09887 ("iommufd: Add a selftest")
Link: https://lore.kernel.org/r/20230120074204.1368-1-nicolinc@nvidia.com


Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>