iommu: Fix ATS invalidation timeouts during __iommu_remove_group_pasid()

iommu: Fix ATS invalidation timeouts during __iommu_remove_group_pasid()

If a device is blocked, its PASID domains are already detached. Repeating
iommu_remove_dev_pasid() is unnecessary and might trigger ATS invalidation
timeouts.

Skip the iommu_remove_dev_pasid() call upon gdev->blocked.

Fixes: c279e83953d9 ("iommu: Introduce pci_dev_reset_iommu_prepare/done()")
Cc: stable@vger.kernel.org
Closes: https://sashiko.dev/#/patchset/20260407194644.171304-1-nicolinc%40nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>