mac80211: fix locking in ieee80211_restart_work()

mac80211: fix locking in ieee80211_restart_work()

[ Upstream commit 276e189f8e4e3cce1634d6bac4ed0d9ca242441b ]

Ilan's change to move locking around accidentally lost the
wiphy_lock() during some porting, add it back.

Fixes: 45daaa131841 ("mac80211: Properly WARN on HW scan before restart")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210817121210.47bdb177064f.Ib1ef79440cd27f318c028ddfc0c642406917f512@changeid
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>