drm/exynos: mic: clean up drm_bridge_add call

This patch removes unnecessary checking of return value.
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1499071350-25168-13-git-send-email-inki.dae@samsung.com

drivers/gpu/drm/exynos/exynos_drm_mic.c

@@ -456,11 +456,7 @@ static int exynos_mic_probe(struct platform_device *pdev)
 	mic->bridge.funcs = &mic_bridge_funcs;
 	mic->bridge.of_node = dev->of_node;
 
-	ret = drm_bridge_add(&mic->bridge);
-	if (ret) {
-		DRM_ERROR("mic: Failed to add MIC to the global bridge list\n");
-		return ret;
-	}
+	drm_bridge_add(&mic->bridge);
 
 	pm_runtime_enable(dev);