scsi: mpt3sas: Only one vSES is present even when IOC has multi vSES

Whenever the driver is adding a vSES to virtual-phys list it is
reinitializing the list head. Hence those vSES devices which were added
previously are lost.

Stop reinitializing the list every time a new vSES device is added.

Link: https://lore.kernel.org/r/20210330105004.20413-1-sreekanth.reddy@broadcom.com
Cc: stable@vger.kernel.org #v5.11.10+
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpt3sas/mpt3sas_scsih.c

@@ -6484,6 +6484,9 @@ _scsih_alloc_vphy(struct MPT3SAS_ADAPTER *ioc, u8 port_id, u8 phy_num)
 		if (!vphy)
 			return NULL;
 
+		if (!port->vphys_mask)
+			INIT_LIST_HEAD(&port->vphys_list);
+
 		/*
 		 * Enable bit corresponding to HBA phy number on its
 		 * parent hba_port object's vphys_mask field.
@@ -6491,7 +6494,6 @@ _scsih_alloc_vphy(struct MPT3SAS_ADAPTER *ioc, u8 port_id, u8 phy_num)
 		port->vphys_mask |= (1 << phy_num);
 		vphy->phy_mask |= (1 << phy_num);
 
-		INIT_LIST_HEAD(&port->vphys_list);
 		list_add_tail(&vphy->list, &port->vphys_list);
 
 		ioc_info(ioc,