qlcnic: Remove redundant unlock in qlcnic_pinit_from_rom

qlcnic: Remove redundant unlock in qlcnic_pinit_from_rom

Previous commit b8408e57ea17 removes the qlcnic_rom_lock()
in qlcnic_pinit_from_rom(), but remains its corresponding
unlock function, which is odd. I'm not very sure whether the
lock is missing, or the unlock is redundant. This bug is
suggested by a static analysis tool, please advise.

Fixes: b8408e57ea17 ("qlcnic: updated reset sequence")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>