dwc3: google: Fix PM domain leak in dwc3_google_probe()

dwc3: google: Fix PM domain leak in dwc3_google_probe()

When syscon_regmap_lookup_by_phandle_args() fails, the function was
returning directly without cleaning up the power domain initialized
earlier by dwc3_google_pm_domain_init().

Fix by jumping to err_deinit_pdom to properly clean up resources.

Fixes: 8995a37371bf4 ("usb: dwc3: Add Google Tensor SoC DWC3 glue driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260316-dwc3-google-v1-1-c9bde1b02f62@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>