[media] s5p-mfc: fix memory leak in s5p_mfc_remove()

s5p_mfc_remove() fails to release encoder and decoder video devices.
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NKamil Debski <k.debski@samsung.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/s5p-mfc/s5p_mfc.c

@@ -1318,6 +1318,8 @@ static int s5p_mfc_remove(struct platform_device *pdev)
 
 	video_unregister_device(dev->vfd_enc);
 	video_unregister_device(dev->vfd_dec);
+	video_device_release(dev->vfd_enc);
+	video_device_release(dev->vfd_dec);
 	v4l2_device_unregister(&dev->v4l2_dev);
 	s5p_mfc_release_firmware(dev);
 	vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);