USB: EHCI: fix initialization bug in iso_stream_schedule()
USB: EHCI: fix initialization bug in iso_stream_schedule()

Commit c3ee9b76aa93 (EHCI: improved logic for isochronous scheduling)
introduced the idea of using ehci->last_iso_frame as the origin (or
base) for the circular calculations involved in modifying the
isochronous schedule.  However, the new code it added used
ehci->last_iso_frame before the value was properly initialized.  This
patch rectifies the mistake by moving the initialization lines earlier
in iso_stream_schedule().

This fixes Bugzilla #72891.

Signed-off-by: Alan Stern <75ea6bb7bfc1186f92d26164de5f9268c9a45b59@rowland.harvard.edu>
Fixes: c3ee9b76aa93
Reported-by: Joe Bryant <0e60389af23597f2751d6cb492eb16974ab17857@yahoo.com>
Tested-by: Joe Bryant <0e60389af23597f2751d6cb492eb16974ab17857@yahoo.com>
Tested-by: Martin Long <54669547a225ff20cba8b75a4adca540eef25858@longhome.co.uk>
CC: <4fbacc2fa0ffdbb11bf1ad6925b886ebd08dd15f@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs