dmaengine: Add missing cleanup on module unload

Upstream commit b7cb9a0 ("dmaengine: idxd: Fix refcount underflow
on module unload") fixes a refcount underflow by replacing the call to
idxd_cleanup() in the remove function with direct cleanup calls. That works
fine upstream. However, upstream removed support for IOMMU_DEV_FEAT_IOPF,
which is still supported in v6.12.y. The backport of commit b7cb9a0
into v6.12.y misses the call to disable it. This results in a warning
backtrace when unloading and reloading the module.

WARNING: CPU: 0 PID: 665849 at drivers/pci/ats.c:337 pci_reset_pri+0x4c/0x60
...
RIP: 0010:pci_reset_pri+0xa7/0x130

Add the missing cleanup call to fix the problem.

Fixes: ce81905 ("dmaengine: idxd: Fix refcount underflow on module unload")
Cc: Yi Sun <[email protected]>
Cc: Shuai Xue <[email protected]>
Cc: Dave Jiang <[email protected]>
Cc: Vinicius Costa Gomes <[email protected]>
Cc: Vinod Koul <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Acked-by: Vinicius Costa Gomes <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: groeck

drivers/dma/idxd/init.c

@@ -923,6 +923,8 @@ static void idxd_remove(struct pci_dev *pdev)
 	idxd_cleanup_interrupts(idxd);
 	if (device_pasid_enabled(idxd))
 		idxd_disable_system_pasid(idxd);
+	if (device_user_pasid_enabled(idxd))
+		idxd_disable_sva(idxd->pdev);
 	pci_iounmap(pdev, idxd->reg_base);
 	put_device(idxd_confdev(idxd));
 	pci_disable_device(pdev);