power: reset: hisi-reboot: Unmap region obtained by of_iomap

commit bae170efd6c42bf116f513a1dd07639d68fa71b9 upstream.

Free memory mapping, if probe is not successful.

Fixes: 4a9b37371822 ("power: reset: move hisilicon reboot code")
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c
index 9ab7f562a83ba6538054e1e39a8b758489a4f8d7..f69387e12c1e545a3cedcb126247050401c8996a 100644 (file)
--- a/drivers/power/reset/hisi-reboot.c
+++ b/drivers/power/reset/hisi-reboot.c
@@ -53,13 +53,16 @@ static int hisi_reboot_probe(struct platform_device *pdev)
 
        if (of_property_read_u32(np, "reboot-offset", &reboot_offset) < 0) {
                pr_err("failed to find reboot-offset property\n");
+               iounmap(base);
                return -EINVAL;
        }
 
        err = register_restart_handler(&hisi_restart_nb);
-       if (err)
+       if (err) {
                dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n",
                        err);
+               iounmap(base);
+       }
 
        return err;
 }