ASoC: samsung: i2s: Fix error handling path in i2s_set_sysclk()

If 'clk_prepare_enable()' fails, we must 'put' the corresponding clock.
Othewise, there is a resource leak.

Fixes: f5c97c7b ("ASoC: samsung: i2s: Handle return value of clk_prepare_enable.")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>