conf: fix cannot start a guest have a shareable network iscsi hostdev

https://bugzilla.redhat.com/show_bug.cgi?id=1174569

There's nothing we need to do for shared iSCSI devices in
qemuAddSharedHostdev and qemuRemoveSharedHostdev. The iSCSI layer
takes care about that for us.
Signed-off-by: NLuyao Huang <lhuang@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_conf.c

@@ -1158,7 +1158,8 @@ qemuAddSharedHostdev(virQEMUDriverPtr driver,
 
     if (!hostdev->shareable ||
         !(hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
-          hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI))
+          hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+          hostdev->source.subsys.u.scsi.protocol != VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI))
         return 0;
 
     if (!(key = qemuGetSharedHostdevKey(hostdev)))
@@ -1261,7 +1262,8 @@ qemuRemoveSharedHostdev(virQEMUDriverPtr driver,
 
     if (!hostdev->shareable ||
         !(hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
-          hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI))
+          hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+          hostdev->source.subsys.u.scsi.protocol != VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI))
         return 0;
 
     if (!(key = qemuGetSharedHostdevKey(hostdev)))