clk: ingenic/TCU: Fix round_rate returning error

When requesting a rate superior to the parent's rate, it would return
-EINVAL instead of simply returning the parent's rate like it should.

Fixes: 4f89e4b ("clk: ingenic: Add driver for the TCU clocks")
Cc: [email protected]
Signed-off-by: Paul Cercueil <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Stephen Boyd <[email protected]>

Author: pcercuei

drivers/clk/ingenic/tcu.c

@@ -189,7 +189,7 @@ static long ingenic_tcu_round_rate(struct clk_hw *hw, unsigned long req_rate,
 	u8 prescale;
 
 	if (req_rate > rate)
-		return -EINVAL;
+		return rate;
 
 	prescale = ingenic_tcu_get_prescale(rate, req_rate);