[SCSI] qla2xxx: Clear options-flags while staging firmware-execution.

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/qla2xxx/qla_mbx.c

@@ -391,7 +391,8 @@ qla2x00_execute_fw(scsi_qla_host_t *ha, uint32_t risc_addr)
 		mcp->mb[1] = MSW(risc_addr);
 		mcp->mb[2] = LSW(risc_addr);
 		mcp->mb[3] = 0;
-		mcp->out_mb |= MBX_3|MBX_2|MBX_1;
+		mcp->mb[4] = 0;
+		mcp->out_mb |= MBX_4|MBX_3|MBX_2|MBX_1;
 		mcp->in_mb |= MBX_1;
 	} else {
 		mcp->mb[1] = LSW(risc_addr);