[v2] clk: st: clk-flexgen: Unmap region obtained by of_iomap

[Arvind yadav]

From: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>

Free memory mapping, if probe is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
---
 drivers/clk/st/clk-flexgen.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c
index 546bd79..ba69098 100644
--- a/drivers/clk/st/clk-flexgen.c
+++ b/drivers/clk/st/clk-flexgen.c
@@ -278,8 +278,10 @@ static void __init st_of_flexgen_setup(struct device_node *np)
 		return;
 
 	parents = flexgen_get_parents(np, &num_parents);
-	if (!parents)
+	if (!parents) {
+		iounmap(reg);
 		return;
+	}
 
 	clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
 	if (!clk_data)
@@ -337,6 +339,7 @@ static void __init st_of_flexgen_setup(struct device_node *np)
 	return;
 
 err:
+	iounmap(reg);
 	if (clk_data)
 		kfree(clk_data->clks);
 	kfree(clk_data);
-- 
1.7.9.5