media: video-mux: Use dev_err_probe()

Simplify the mux error path a bit by using dev_err_probe().

Signed-off-by: Philipp Zabel <[e-mail]>
Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/video-mux.c

···
 	vmux->mux = devm_mux_control_get(dev, NULL);
 	if (IS_ERR(vmux->mux)) {
 		ret = PTR_ERR(vmux->mux);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get mux: %d\n", ret);
-		return ret;
+		return dev_err_probe(dev, ret, "Failed to get mux\n");
 	}
 
 	mutex_init(&vmux->lock);