iommu/sva: Fix memory leak in iommu_sva_bind_device()

Free the handle when the domain allocation fails before unlocking and
returning.

Fixes: 092edad ("iommu: Support mm PASID 1:n with sva domains")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20231213111450.2487861-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: harshimogalapalli

drivers/iommu/iommu-sva.c

@@ -101,7 +101,7 @@ struct iommu_sva *iommu_sva_bind_device(struct device *dev, struct mm_struct *mm
 	domain = iommu_sva_domain_alloc(dev, mm);
 	if (!domain) {
 		ret = -ENOMEM;
-		goto out_unlock;
+		goto out_free_handle;
 	}
 
 	ret = iommu_attach_device_pasid(domain, dev, iommu_mm->pasid);
@@ -118,6 +118,7 @@ struct iommu_sva *iommu_sva_bind_device(struct device *dev, struct mm_struct *mm
 
 out_free_domain:
 	iommu_domain_free(domain);
+out_free_handle:
 	kfree(handle);
 out_unlock:
 	mutex_unlock(&iommu_sva_lock);