[SCSI] qla2xxx: Reset seconds_since_last_heartbeat correctly.

The seconds_since_last_heartbeat should be checked for consecutive
heartbeat checks. Currently it could happen that seconds_since_last_heartbeat
gets set to max (2 seconds) for non-consecutive heartbeat checks.

Signed-off-by: Giridhar Malavali <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/qla2xxx/qla_nx.c

···
 				complete(&ha->mbx_intr_comp);
 			}
 		}
-	}
+	} else
+		vha->seconds_since_last_heartbeat = 0;
 	vha->fw_heartbeat_counter = fw_heartbeat_counter;
 }