USB: qcserial: fix a memory leak in qcprobe error path

This patch adds missing kfree(data) before return -ENODEV.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index 04bb759..93d72eb 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -139,6 +139,7 @@
 					"Could not set interface, error %d\n",
 					retval);
 				retval = -ENODEV;
+				kfree(data);
 			}
 			return retval;
 		}
@@ -155,6 +156,7 @@
 					"Could not set interface, error %d\n",
 					retval);
 				retval = -ENODEV;
+				kfree(data);
 			}
 			return retval;
 		}
@@ -163,6 +165,7 @@
 	default:
 		dev_err(&serial->dev->dev,
 			"unknown number of interfaces: %d\n", nintf);
+		kfree(data);
 		return -ENODEV;
 	}