That maintains sanity if it is ever called from some other spot, and
also makes the label names coherent.
Signed-off-by: Peter Rosin <peda@axentia.se>
 
                ret = i2c_mux_add_adapter(muxc, nr, mux->data.values[i], class);
                if (ret)
-                       goto add_adapter_failed;
+                       goto err_del_mux_adapters;
        }
 
        dev_dbg(&pdev->dev, "%d port mux on %s adapter\n",
 
        return 0;
 
-add_adapter_failed:
+err_del_mux_adapters:
        i2c_mux_del_adapters(muxc);
 err_put_parent:
        i2c_put_adapter(parent);