diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 5b0ae5ddad74..27c08f22dec8 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1974,9 +1974,14 @@ static int __init docg3_probe(struct platform_device *pdev)
 		dev_err(dev, "No I/O memory resource defined\n");
 		return ret;
 	}
-	base = devm_ioremap(dev, ress->start, DOC_IOSPACE_SIZE);
 
 	ret = -ENOMEM;
+	base = devm_ioremap(dev, ress->start, DOC_IOSPACE_SIZE);
+	if (!base) {
+		dev_err(dev, "devm_ioremap dev failed\n");
+		return ret;
+	}
+
 	cascade = devm_kcalloc(dev, DOC_MAX_NBFLOORS, sizeof(*cascade),
 			       GFP_KERNEL);
 	if (!cascade)