ASoC: Intel: Skylake: Fix to cleanup if skl_sst_dsp_init fails

This patch fixes the below warning reported by Dan by invoking
skl_sst_dsp_cleanup() in cleanup path on error and not bailing out

	sound/soc/intel/skylake/skl-sst.c:270 skl_sst_dsp_init()
	info: ignoring unreachable code.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-sst.c

@@ -259,15 +259,16 @@ int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 	ret = sst->fw_ops.load_fw(sst);
 	if (ret < 0) {
 		dev_err(dev, "Load base fw failed : %d", ret);
-		return ret;
+		goto cleanup;
 	}
 
 	if (dsp)
 		*dsp = skl;
 
-	return 0;
+	return ret;
 
-	skl_ipc_free(&skl->ipc);
+cleanup:
+	skl_sst_dsp_cleanup(dev, skl);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(skl_sst_dsp_init);