ASoC: intel: sst: Handle return value of platform_get_irq

platform_get_irq() can fail here and we must check its return value.
Signed-off-by: NArvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/intel/atom/sst/sst_acpi.c

@@ -236,6 +236,9 @@ static int sst_platform_get_resources(struct intel_sst_drv *ctx)
 	/* Find the IRQ */
 	ctx->irq_num = platform_get_irq(pdev,
 				ctx->pdata->res_info->acpi_ipc_irq_index);
+	if (ctx->irq_num <= 0)
+		return ctx->irq_num < 0 ? ctx->irq_num : -EIO;
+
 	return 0;
 }