ASoC: ti: j721e-evm: Check for not initialized parent_clk_id

During probe the parent_clk_id is set to -1 which should not be used to
array index within hsdiv_rates[].
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20210717122820.1467-3-peter.ujfalusi@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>

sound/soc/ti/j721e-evm.c

@@ -197,7 +197,7 @@ static int j721e_configure_refclk(struct j721e_priv *priv,
 		return ret;
 	}
 
-	if (priv->hsdiv_rates[domain->parent_clk_id] != scki) {
+	if (domain->parent_clk_id == -1 || priv->hsdiv_rates[domain->parent_clk_id] != scki) {
 		dev_dbg(priv->dev,
 			"%s configuration for %u Hz: %s, %dxFS (SCKI: %u Hz)\n",
 			audio_domain == J721E_AUDIO_DOMAIN_CPB ? "CPB" : "IVI",