qla2xxx: Do not schedule reset when one is already active when receiving an invalid status handle.

If an adapter reset is already in progress, do not schedule another one when
we receive an invalid status handle.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>