ASoC: dapm: Fix pointer dereference in is_connected_output_ep()

*path is not yet initialized when we check if the widget is connected.

The compiler also warns about this:
sound/soc/soc-dapm.c: In function 'is_connected_output_ep':
sound/soc/soc-dapm.c:824:18: warning: 'path' may be used uninitialized in this function
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/soc-dapm.c

@@ -821,7 +821,6 @@ static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
 		    (widget->id == snd_soc_dapm_line &&
 		     !list_empty(&widget->sources))) {
 			widget->outputs = snd_soc_dapm_suspend_check(widget);
-			path->walking = 0;
 			return widget->outputs;
 		}
 	}