[PATCH] net: (cpts) fix a missing check of clk_prepare

[Kangjie Lu]

clk_prepare() could fail, so let's check its status, and if it fails,
return its error code upstream.

Signed-off-by: Kangjie Lu <k...@umn.edu>
---
 drivers/net/ethernet/ti/cpts.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index b96b93c686bf..4f644ac314fe 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -572,7 +572,9 @@ struct cpts *cpts_create(struct device *dev, void __iomem 
*regs,
                return ERR_CAST(cpts->refclk);
        }
 
-       clk_prepare(cpts->refclk);
+       ret = clk_prepare(cpts->refclk);
+       if (ret)
+               return ERR_PTR(ret);
 
        cpts->cc.read = cpts_systim_read;
        cpts->cc.mask = CLOCKSOURCE_MASK(32);
-- 
2.17.2 (Apple Git-113)