1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/clocksource/cyclone.c b/drivers/clocksource/cyclone.c
index 72f811f73e9..9e0998f2288 100644
--- a/drivers/clocksource/cyclone.c
+++ b/drivers/clocksource/cyclone.c
@@ -55,11 +55,11 @@ static int __init init_cyclone_clocksource(void)
         }
         /* even on 64bit systems, this is only 32bits: */
         base = readl(reg);
+        iounmap(reg);
         if (!base) {
                 printk(KERN_ERR "Summit chipset: Could not find valid CBAR value.\n");
                 return -ENODEV;
         }
-        iounmap(reg);
 
         /* setup PMCC: */
         offset = base + CYCLONE_PMCC_OFFSET;