drm/bridge: sii902x: 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: http://patchwork.freedesktop.org/patch/msgid/1499071350-25168-9-git-send-email-inki.dae@samsung.com

drivers/gpu/drm/bridge/sii902x.c

@@ -418,11 +418,7 @@ static int sii902x_probe(struct i2c_client *client,
 
 	sii902x->bridge.funcs = &sii902x_bridge_funcs;
 	sii902x->bridge.of_node = dev->of_node;
-	ret = drm_bridge_add(&sii902x->bridge);
-	if (ret) {
-		dev_err(dev, "Failed to add drm_bridge\n");
-		return ret;
-	}
+	drm_bridge_add(&sii902x->bridge);
 
 	i2c_set_clientdata(client, sii902x);