Revert "xhci: Set HCD flag to defer primary roothub registration"

This reverts commit b7a0a79.

It has been reported to be causing problems in Arch and Fedora bug
reports.

Reported-by: Hans de Goede <[email protected]>
Link: https://bbs.archlinux.org/viewtopic.php?pid=2000956#p2000956
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2019542
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2019576
Link: https://lore.kernel.org/r/[email protected]
Cc: Mathias Nyman <[email protected]>
Cc: Chris Chiu <[email protected]>
Cc: Alan Stern <[email protected]>
Cc: Kishon Vijay Abraham I <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: gregkh

drivers/usb/host/xhci.c

@@ -692,7 +692,6 @@ int xhci_run(struct usb_hcd *hcd)
 		if (ret)
 			xhci_free_command(xhci, command);
 	}
-	set_bit(HCD_FLAG_DEFER_RH_REGISTER, &hcd->flags);
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"Finished xhci_run for USB2 roothub");