usb: dwc3: gadget: Properly handle failed kick_transfer

If dwc3 fails to issue START_TRANSFER/UPDATE_TRANSFER command, then we
should properly end an active transfer and give back all the started
requests. However if it's for an isoc endpoint, the failure maybe due to
bus-expiry status. In this case, don't give back the requests and wait
for the next retry.

Change-Id: I64ff69a663a9ad7701f877a0cf3bcd87b93c792a
Fixes: 72246da4 ("usb: Introduce DesignWare USB3 DRD Driver")
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Git-commit: 8d99087c2db863c5fa3a4a1f3cb82b3a493705ca
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Mayank Rana <mrana@codeaurora.org>
[prathampratap@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>