[PATCH 4.7 29/69] power: reset: hisi-reboot: Unmap region obtained by of_iomap

[Greg Kroah-Hartman]

4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arvind Yadav <arvind.yadav...@gmail.com>

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...@gmail.com>
Signed-off-by: Sebastian Reichel <s...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/power/reset/hisi-reboot.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/power/reset/hisi-reboot.c
+++ b/drivers/power/reset/hisi-reboot.c
@@ -53,13 +53,16 @@ static int hisi_reboot_probe(struct plat
 
        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;
 }