[SCSI] SRP transport: only remove our own entries

The SCSI SRP transport class currently iterates over all children
devices of the host that is being removed in srp_remove_host(). However,
not all of those children were created by the SRP transport, and
removing them will cause corruption and an oops when their creator tries
to remove them.

Signed-off-by: David Dillow <dillowda@ornl.gov>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/scsi_transport_srp.c

@@ -265,7 +265,8 @@ EXPORT_SYMBOL_GPL(srp_rport_del);
 
 static int do_srp_rport_del(struct device *dev, void *data)
 {
-	srp_rport_del(dev_to_rport(dev));
+	if (scsi_is_srp_rport(dev))
+		srp_rport_del(dev_to_rport(dev));
 	return 0;
 }