diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
index 4a93886..d87cc91 100644
--- a/drivers/misc/sram.c
+++ b/drivers/misc/sram.c
@@ -45,15 +45,11 @@
 	int ret;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -EINVAL;
-
-	size = resource_size(res);
-
 	virt_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(virt_base))
 		return PTR_ERR(virt_base);
 
+	size = resource_size(res);
 
 	sram = devm_kzalloc(&pdev->dev, sizeof(*sram), GFP_KERNEL);
 	if (!sram)