iommu/amd: Remove an unneeded condition

get_device_id() returns an unsigned short device id.  It never fails and
it never returns a negative so we can remove this condition.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 6f6502d..539b0de 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3857,11 +3857,9 @@ static struct irq_domain *get_irq_domain(struct irq_alloc_info *info)
        case X86_IRQ_ALLOC_TYPE_MSI:
        case X86_IRQ_ALLOC_TYPE_MSIX:
                devid = get_device_id(&info->msi_dev->dev);
-               if (devid >= 0) {
-                       iommu = amd_iommu_rlookup_table[devid];
-                       if (iommu)
-                               return iommu->msi_domain;
-               }
+               iommu = amd_iommu_rlookup_table[devid];
+               if (iommu)
+                       return iommu->msi_domain;
                break;
        default:
                break;