diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c
index 7435b5a..b640068 100644
--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -448,8 +448,10 @@
 	char *kbuf = kmalloc(len + 1, GFP_KERNEL);
 	if (!kbuf)
 		return -ENOMEM;
-	if (copy_from_user(kbuf, buf, len))
+	if (copy_from_user(kbuf, buf, len)) {
+		kfree(kbuf);
 		return -EIO;
+	}
 
 	kbuf[len] = '\0';
 	rc = kstrtol(kbuf, 0, &channel);