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: 8995a37 ("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>

Author: outman119

drivers/usb/dwc3/dwc3-google.c

@@ -385,8 +385,9 @@ static int dwc3_google_probe(struct platform_device *pdev)
 						     "google,usb-cfg-csr",
 						     ARRAY_SIZE(args), args);
 	if (IS_ERR(google->usb_cfg_regmap)) {
-		return dev_err_probe(dev, PTR_ERR(google->usb_cfg_regmap),
-				     "invalid usb cfg csr\n");
+		ret = dev_err_probe(dev, PTR_ERR(google->usb_cfg_regmap),
+				    "invalid usb cfg csr\n");
+		goto err_deinit_pdom;
 	}
 
 	google->host_cfg_offset = args[0];