iommu: Store either domain or handle in group->pasid_array

BugLink: https://bugs.launchpad.net/bugs/2119656

iommu_attach_device_pasid() only stores handle to group->pasid_array
when there is a valid handle input. However, it makes the
iommu_attach_device_pasid() unable to detect if the pasid has been
attached or not previously.

To be complete, let the iommu_attach_device_pasid() store the domain
to group->pasid_array if no valid handle. The other users of the
group->pasid_array should be updated to be consistent. e.g. the
iommu_attach_group_handle() and iommu_replace_group_handle().

Link: https://patch.msgid.link/r/20250226011849.5102-4-yi.l.liu@intel.com
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
(cherry picked from commit e1ea9d3)
Signed-off-by: Nirmoy Das <nirmoyd@nvidia.com>
Acked-by: Carol L Soto <csoto@nvidia.com>
Acked-by: Matt Ochs <mochs@nvidia.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Signed-off--by: Brad Figg <bfigg@nvidia.com>

Author: yiliu1765

drivers/firmware/arm_ffa/driver.c

@@ -1368,31 +1368,6 @@ static int __ffa_notify_request(struct ffa_device *dev, bool is_per_vcpu,
 	return rc;
 }
 
-static int ffa_notify_relinquish(struct ffa_device *dev, int notify_id)
-{
-	return __ffa_notify_relinquish(dev, notify_id, false);
-}
-
-static int ffa_fwk_notify_relinquish(struct ffa_device *dev, int notify_id)
-{
-	return __ffa_notify_relinquish(dev, notify_id, true);
-}
-
-static int __ffa_notify_request(struct ffa_device *dev, bool is_per_vcpu,
-				void *cb, void *cb_data,
-				int notify_id, bool is_framework)
-{
-	return __ffa_notify_request(dev, is_per_vcpu, cb, cb_data, notify_id,
-				    false);
-}
-
-static int
-ffa_fwk_notify_request(struct ffa_device *dev, ffa_fwk_notifier_cb cb,
-		       void *cb_data, int notify_id)
-{
-	return __ffa_notify_request(dev, false, cb, cb_data, notify_id, true);
-}
-
 static int ffa_notify_request(struct ffa_device *dev, bool is_per_vcpu,
 			      ffa_notifier_cb cb, void *cb_data, int notify_id)
 {