drivers: dio: add missing iounmap() in dio_init()

If kzalloc() fails, iounmap() need be called in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220511064506.3398512-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/dio/dio.c b/drivers/dio/dio.c
index 005a82f671c375d26a9c622dd794d8cbd0bfa524..0e5a5662d5a40c21d1aa2c9e38eb200af70324e1 100644 (file)
--- a/drivers/dio/dio.c
+++ b/drivers/dio/dio.c
@@ -216,8 +216,11 @@ static int __init dio_init(void)
 
                /* Found a board, allocate it an entry in the list */
                dev = kzalloc(sizeof(struct dio_dev), GFP_KERNEL);
-               if (!dev)
+               if (!dev) {
+                       if (scode >= DIOII_SCBASE)
+                               iounmap(va);
                        return -ENOMEM;
+               }
 
                dev->bus = &dio_bus;
                dev->dev.parent = &dio_bus.dev;