USB: FHCI: avoid redundant condition

The right part of the following or expression is only evaluated if
td is nonzero.
!td || (td && td.status == USB_TD_INPROGRESS)
So no need to check td again.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>