ASoC: ti: omap-mcbsp: Ignore errors for getting fck_src

Commit 349355ce ("ARM: OMAP2+: Drop legacy platform data for omap4 mcbsp")
dropped prcm_fck for omap4, so the clk_src might not be available making the
clk_get(src) fail. In such cases, rely on the devicetree to assign
the correct parent.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://lore.kernel.org/r/20230705190324.355282-2-andreas@kemnade.infoSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/ti/omap-mcbsp.c

@@ -70,8 +70,8 @@ static int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id)
 
 	fck_src = clk_get(mcbsp->dev, src);
 	if (IS_ERR(fck_src)) {
-		dev_err(mcbsp->dev, "CLKS: could not clk_get() %s\n", src);
-		return -EINVAL;
+		dev_info(mcbsp->dev, "CLKS: could not clk_get() %s\n", src);
+		return 0;
 	}
 
 	pm_runtime_put_sync(mcbsp->dev);