[patch] usb: gadget: gadgetfs: fix an oops in ep_write()

[Dan Carpenter]

We try to free an ERR_PTR on this error path.

Fixes: b44be2462dbe ('usb: gadget: gadgetfs: Free memory allocated by 
memdup_user()')
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/usb/gadget/legacy/inode.c 
b/drivers/usb/gadget/legacy/inode.c
index 0804861..db49ec4 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -441,6 +441,7 @@ ep_write (struct file *fd, const char __user *buf, size_t 
len, loff_t *ptr)
        kbuf = memdup_user(buf, len);
        if (IS_ERR(kbuf)) {
                value = PTR_ERR(kbuf);
+               kbuf = NULL;
                goto free1;
        }
 
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