[PATCH] clocksource: mxs_timer: Unmap region obtained by of_iomap

[Arvind Yadav]

Free memory mapping, if mxs_timer_init is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 drivers/clocksource/mxs_timer.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c
index 0ba0a91..add3c9c0 100644
--- a/drivers/clocksource/mxs_timer.c
+++ b/drivers/clocksource/mxs_timer.c
@@ -235,12 +235,13 @@ static int __init mxs_timer_init(struct device_node *np)
        timer_clk = of_clk_get(np, 0);
        if (IS_ERR(timer_clk)) {
                pr_err("%s: failed to get clk\n", __func__);
+               iounmap(mxs_timrot_base);
                return PTR_ERR(timer_clk);
        }
 
        ret = clk_prepare_enable(timer_clk);
        if (ret)
-               return ret;
+               goto error_iounmap;
 
        /*
         * Initialize timers to a known state
@@ -280,17 +281,24 @@ static int __init mxs_timer_init(struct device_node *np)
        /* init and register the timer to the framework */
        ret = mxs_clocksource_init(timer_clk);
        if (ret)
-               return ret;
+               goto error_iounmap;
 
        ret = mxs_clockevent_init(timer_clk);
        if (ret)
-               return ret;
+               goto error_iounmap;
 
        /* Make irqs happen */
        irq = irq_of_parse_and_map(np, 0);
-       if (irq <= 0)
-               return -EINVAL;
+       if (irq <= 0) {
+               ret = -EINVAL;
+               goto error_iounmap;
+       }
 
        return setup_irq(irq, &mxs_timer_irq);
+
+error_iounmap:
+       iounmap(mxs_timrot_base);
+       return ret;
+
 }
 CLOCKSOURCE_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init);
-- 
2.7.4