clk: keystone: pll: Unmap region obtained by of_iomap

Free memory mapping, if of_pll_div_clk_init is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/clk/keystone/pll.c b/drivers/clk/keystone/pll.c
index 185f19c6836e..e7e840fb74ea 100644
--- a/drivers/clk/keystone/pll.c
+++ b/drivers/clk/keystone/pll.c
@@ -267,25 +267,30 @@ static void __init of_pll_div_clk_init(struct device_node *node)
         parent_name = of_clk_get_parent_name(node, 0);
         if (!parent_name) {
                 pr_err("%s: missing parent clock\n", __func__);
+                iounmap(reg);
                 return;
         }
 
         if (of_property_read_u32(node, "bit-shift", &shift)) {
                 pr_err("%s: missing 'shift' property\n", __func__);
+                iounmap(reg);
                 return;
         }
 
         if (of_property_read_u32(node, "bit-mask", &mask)) {
                 pr_err("%s: missing 'bit-mask' property\n", __func__);
+                iounmap(reg);
                 return;
         }
 
         clk = clk_register_divider(NULL, clk_name, parent_name, 0, reg, shift,
                                  mask, 0, NULL);
-        if (clk)
+        if (clk) {
                 of_clk_add_provider(node, of_clk_src_simple_get, clk);
-        else
+        } else {
                 pr_err("%s: error registering divider %s\n", __func__, clk_name);
+                iounmap(reg);
+        }
 }
 CLK_OF_DECLARE(pll_divider_clock, "ti,keystone,pll-divider-clock", of_pll_div_clk_init);