[PATCH] clk: fix ccf_clk_get_rate

[Zhiqiang Hou]

From: Hou Zhiqiang <Zhiqiang.Hou at nxp.com>

As the type of return value is 'ulong', when clk_get_by_id() failed,
it should return 0 to indicate the get_rate operation doesn't succeed.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou at nxp.com>
---
 drivers/clk/clk.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index b8c2e8d531..4c2c372cd3 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -84,7 +84,8 @@ ulong ccf_clk_get_rate(struct clk *clk)
 	int err = clk_get_by_id(clk->id, &c);
 
 	if (err)
-		return err;
+		return 0;
+
 	return clk_get_rate(c);
 }
 
-- 
2.17.1