usb: dwc3: xilinx: add missing depopulate in probe error path

Depopulate device in probe error paths to fix leak of children
resources.

Fixes: 53b5ff83 ("usb: dwc3: xilinx: improve error handling for PM APIs")
Cc: stable@vger.kernel.org
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240816075409.23080-2-krzysztof.kozlowski@linaro.org


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