FAILED: patch "[PATCH] usb: dwc3: xilinx: fix uninitialized return value" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b470947c3672f7eb7c4c271d510383d896831cc2 Mon Sep 17 00:00:00 2001
From: Robert Hancock <[email protected]>
Date: Thu, 27 Jan 2022 16:15:00 -0600
Subject: [PATCH] usb: dwc3: xilinx: fix uninitialized return value

A previous patch to skip part of the initialization when a USB3 PHY was not present could result in the return value being uninitialized in that case, causing spurious probe failures. Initialize ret to 0 to avoid this.

index e14ac15e24c3..a6f3a9b38789 100644
@@ -99,7 +99,7 @@ static int dwc3_xlnx_init_zynqmp(struct dwc3_xlnx *priv_data)
 	struct device		*dev = priv_data->dev;
 	struct reset_control	*crst, *hibrst, *apbrst;
 	struct phy		*usb3_phy;
-	int			ret;
+	int			ret = 0;
 	u32			reg;
 
 	usb3_phy = devm_phy_optional_get(dev, "usb3-phy");