wifi: wilc1000: fix declarations ordering

Fix reverse-christmas tree order in some functions before adding more
variables

Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240215-wilc_fix_rcu_usage-v1-3-f610e46c6f82@bootlin.com