Input: iqs626a - use cleanup facility for fwnodes

Use __free(fwnode_handle) cleanup facility to ensure that references to
acquired fwnodes are dropped at appropriate times automatically.

Reviewed-by: Jeff LaBundy <jeff@labundy.com>
Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240904044814.1048062-1-dmitry.torokhov@gmail.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>