media: atomisp: clean up for-loop, remove redundant assignment to variable i

There is a for-loop that initializes variable i but does not use it; the
assignment is redundant and can be removed. The proceeding assignment to
pointer fw can also be moved into the for-loop to clean up the code.

Link: https://lore.kernel.org/linux-media/20220628152451.184416-1-colin.i.king@gmail.com


Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>