thermal: qoriq: Fix error path of calling qoriq_tmu_register_tmu_zone fail

When registering tmu zone failed, the error path should be err_tmu
instead of err_iomap, as iounmap() needs to be called.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/qoriq_thermal.c

@@ -231,7 +231,7 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to register sensors\n");
 		ret = -ENODEV;
-		goto err_iomap;
+		goto err_tmu;
 	}
 
 	return 0;