ASoC: davinci-mcasp: Handle return value of devm_kasprintf

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

sound/soc/davinci/davinci-mcasp.c

@@ -1868,6 +1868,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 	if (irq >= 0) {
 		irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_common",
 					  dev_name(&pdev->dev));
+		if (!irq_name) {
+			ret = -ENOMEM;
+			goto err;
+		}
 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 						davinci_mcasp_common_irq_handler,
 						IRQF_ONESHOT | IRQF_SHARED,
@@ -1885,6 +1889,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 	if (irq >= 0) {
 		irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_rx",
 					  dev_name(&pdev->dev));
+		if (!irq_name) {
+			ret = -ENOMEM;
+			goto err;
+		}
 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 						davinci_mcasp_rx_irq_handler,
 						IRQF_ONESHOT, irq_name, mcasp);
@@ -1900,6 +1908,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 	if (irq >= 0) {
 		irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_tx",
 					  dev_name(&pdev->dev));
+		if (!irq_name) {
+			ret = -ENOMEM;
+			goto err;
+		}
 		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 						davinci_mcasp_tx_irq_handler,
 						IRQF_ONESHOT, irq_name, mcasp);