thermal: exynos_tmu: fix wrong error check for mapped memory

The error check is checking for a "base" mapped memory base
instead of "base_common". Fixing the same.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/samsung/exynos_tmu.c

@@ -592,7 +592,7 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 
 	data->base_common = devm_ioremap(&pdev->dev, res.start,
 					resource_size(&res));
-	if (!data->base) {
+	if (!data->base_common) {
 		dev_err(&pdev->dev, "Failed to ioremap memory\n");
 		return -ENOMEM;
 	}