iwlwifi: pnvm: don't skip everything when not reloading

Even if we don't reload the file from disk, we still need to
trigger the PNVM load flow with the device; fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes: 69725928 ("iwlwifi: read and parse PNVM file")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20210115130252.85ef56c4ef8c.I3b853ce041a0755d45e448035bef1837995d191b@changeid