wifi: iwlegacy: 4965: corrected fix for potential off-by-one overflow in il4965_rs_fi...

wifi: iwlegacy: 4965: corrected fix for potential off-by-one overflow in il4965_rs_fill_link_cmd()

This reverts commit d52d82d885f81008271b325bfef85ff1ac80f567 as
it can cause invalid link quality command sent to the firmware
and address the off-by-one issue by fixing condition of while loop.

Cc: stable@vger.kernel.org
Fixes: d52d82d885f8 ("wifi: iwlegacy: 4965: fix potential off-by-one overflow in il4965_rs_fill_link_cmd()")
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220815073737.GA999388@wp.pl