x86/amd-iommu: Remove double NULL check in check_device

dev was tested just above, so drop the second test.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index adb0ba025702..2c4a5012038e 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -118,7 +118,7 @@ static bool check_device(struct device *dev)
                 return false;
 
         /* No device or no PCI device */
-        if (!dev || dev->bus != &pci_bus_type)
+        if (dev->bus != &pci_bus_type)
                 return false;
 
         devid = get_device_id(dev);