scsi: hisi_sas: Remove sleep after issue phy reset if sas_smp_phy_control() fails

At expander environment, we delay after issue phy reset to wait for
hardware to handle phy reset. But if sas_smp_phy_control() fails, the
delay is unnecessary so remove it.

Link: https://lore.kernel.org/r/1567774537-20003-5-git-send-email-john.garry@huawei.comSigned-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hisi_sas/hisi_sas_main.c

@@ -1791,9 +1791,10 @@ static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
 	} else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
 		/*
 		 * If in init state, we rely on caller to wait for link to be
-		 * ready; otherwise, delay.
+		 * ready; otherwise, except phy reset is fail, delay.
 		 */
-		msleep(2000);
+		if (!rc)
+			msleep(2000);
 	}
 
 	return rc;