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

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>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c
index 9ab7f562a83b..f69387e12c1e 100644
--- 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;
 }