leds: sc27xx: Move mutex_init() down

Move the mutex_init() to avoid redundant mutex_destroy() calls after
that for each time the probe fails.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20231013022010.854367-1-chunyan.zhang@unisoc.com


Signed-off-by: Lee Jones <lee@kernel.org>