diff --git a/sound/mips/snd-n64.c b/sound/mips/snd-n64.c
index ca6b4b99da981c349089df833cfa2463ed027279..e35e93157755f0bf1e61ca4987b76f59dc8db3c6 100644
--- a/sound/mips/snd-n64.c
+++ b/sound/mips/snd-n64.c
@@ -312,14 +312,14 @@ static int __init n64audio_probe(struct platform_device *pdev)
 	}
 
 	priv->mi_reg_base = devm_platform_ioremap_resource(pdev, 0);
-	if (!priv->mi_reg_base) {
-		err = -EINVAL;
+	if (IS_ERR(priv->mi_reg_base)) {
+		err = PTR_ERR(priv->mi_reg_base);
 		goto fail_dma_alloc;
 	}
 
 	priv->ai_reg_base = devm_platform_ioremap_resource(pdev, 1);
-	if (!priv->ai_reg_base) {
-		err = -EINVAL;
+	if (IS_ERR(priv->ai_reg_base)) {
+		err = PTR_ERR(priv->ai_reg_base);
 		goto fail_dma_alloc;
 	}