[PATCH V3] clocksource/timer-imx-gpt: Preventing resource leakage in error case.

[Arvind Yadav]

-Free previously allocated memory.
-Unmap I/O memory from kernel address space.

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 drivers/clocksource/timer-imx-gpt.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/clocksource/timer-imx-gpt.c 
b/drivers/clocksource/timer-imx-gpt.c
index f595460..31cfccf 100644
--- a/drivers/clocksource/timer-imx-gpt.c
+++ b/drivers/clocksource/timer-imx-gpt.c
@@ -489,12 +489,16 @@ static int __init mxc_timer_init_dt(struct device_node 
*np,  enum imx_gpt_type t
                return -ENOMEM;
 
        imxtm->base = of_iomap(np, 0);
-       if (!imxtm->base)
-               return -ENXIO;
+       if (!imxtm->base) {
+               ret = -ENXIO;
+               goto error_free;
+       }
 
        imxtm->irq = irq_of_parse_and_map(np, 0);
-       if (imxtm->irq <= 0)
-               return -EINVAL;
+       if (imxtm->irq <= 0) {
+               ret = -EINVAL;
+               goto error_iounmap;
+       }
 
        imxtm->clk_ipg = of_clk_get_by_name(np, "ipg");
 
@@ -506,12 +510,19 @@ static int __init mxc_timer_init_dt(struct device_node 
*np,  enum imx_gpt_type t
        imxtm->type = type;
 
        ret = _mxc_timer_init(imxtm);
-       if (ret)
-               return ret;
+       if (ret) {
+               goto error_iounmap;
+       }
 
        initialized = 1;
 
        return 0;
+
+error_iounmap:
+       iounmap(imxtm->base);
+error_kfree:
+       kfree(imxtm);
+       return ret;
 }
 
 static int __init imx1_timer_init_dt(struct device_node *np)
-- 
2.7.4