ASoC: ux500: mop500: Check before clk_put() not needed

clk_put() already checks the clk ptr using !clk and IS_ERR()
so there is no need to check it again before calling it.

Signed-off-by: Yihao Han <hanyihao@vivo.com>
Link: https://lore.kernel.org/r/20220517033050.5191-1-hanyihao@vivo.com
Signed-off-by: Mark Brown <broonie@kernel.org>