Avoid return NULL if rockchip_clk_register_mmc fails, otherwise
rockchip_clk_register_branches print "unknown clock type". The acutal
case is that it's a known clock type but we fail to regiser it, which
may makes user confuse the reason of failure.

Signed-off-by: Shawn Lin <shawn....@rock-chips.com>
---

 drivers/clk/rockchip/clk-mmc-phase.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/rockchip/clk-mmc-phase.c 
b/drivers/clk/rockchip/clk-mmc-phase.c
index 2685644..e0dc7e8 100644
--- a/drivers/clk/rockchip/clk-mmc-phase.c
+++ b/drivers/clk/rockchip/clk-mmc-phase.c
@@ -150,7 +150,7 @@ struct clk *rockchip_clk_register_mmc(const char *name,
 
        mmc_clock = kmalloc(sizeof(*mmc_clock), GFP_KERNEL);
        if (!mmc_clock)
-               return NULL;
+               return ERR_PTR(-ENOMEM);
 
        init.name = name;
        init.num_parents = num_parents;
@@ -172,11 +172,7 @@ struct clk *rockchip_clk_register_mmc(const char *name,
 
        clk = clk_register(NULL, &mmc_clock->hw);
        if (IS_ERR(clk))
-               goto err_free;
+               kfree(mmc_clock);
 
        return clk;
-
-err_free:
-       kfree(mmc_clock);
-       return NULL;
 }
-- 
2.3.7


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