clk: Fix best_parent_rate after moving code into a separate function

clk: Fix best_parent_rate after moving code into a separate function

best_parent_rate entry is still being used in the code and needs to be
always updated regardless of the CLK_SET_RATE_NO_REPARENT flag.

Fixes: 1b4e99fda73f ("clk: Move no reparent case into a separate function")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20230613131631.270192-1-m.szyprowski@samsung.com
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>