UPSTREAM: usb: gadget: uvc: dont call usb_composite_setup_continue when not streaming

If the streamoff call was triggered by some previous disconnect
or userspace application shutdown the uvc_function_setup_continue
should not be called and the state should not be overwritten.

For this situation the set_alt(0) was never called and the streaming ep
has no USB_GADGET_DELAYED_STATUS pending.

Since the state then was already updated before we also omit the state
update.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20240403-uvc_request_length_by_interval-v7-9-e224bb1035f0@pengutronix.de


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 426439978
(cherry-picked from commit e723ebc3
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/


master)
Change-Id: Icc85fcf3ad6b9f61caa92fd5f1819f9de9a6780e
Signed-off-by: Akash M <akash.m5@samsung.com>