diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index d665fb04d264992fe937b7a3cb7a1512681f2d6d..f0bd1ee8b128300f2f453df3a0a3b80f71550a00 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -433,6 +433,7 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev)
 			is_support_iommu = false;
 		}
 
+		of_node_put(iommu);
 		component_match_add(dev, &match, compare_of, port->parent);
 		of_node_put(port);
 	}