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H A Dvirtio-gpu.cfc4d3f35 Mon Aug 30 17:50:33 GMT 2021 Dongwon Kim <dongwon.kim@intel.com> virtio-gpu: no point of checking res->iov

The code should check the opposite condition of res->iov because it will be null
if virtio_gpu_create_mapping_iov fails and actually this checking is not even
required because checking on ret covers all failing cases.

Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Message-Id: <20210830175033.29233-1-dongwon.kim@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>