hw/virtio/vhost: Fix typo in comment.

Signed-off-by: Leonardo Garcia <lagarcia@br.ibm.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <a10a0ddab65b474ebea1e1141abe0f4aa463909b.1637668012.git.lagarcia@br.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

hw/virtio/vhost.c

@@ -313,7 +313,7 @@ static int vhost_dev_has_iommu(struct vhost_dev *dev)
      * For vhost, VIRTIO_F_IOMMU_PLATFORM means the backend support
      * incremental memory mapping API via IOTLB API. For platform that
      * does not have IOMMU, there's no need to enable this feature
-     * which may cause unnecessary IOTLB miss/update trnasactions.
+     * which may cause unnecessary IOTLB miss/update transactions.
      */
     return virtio_bus_device_iommu_enabled(vdev) &&
            virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);