cifs: Silence uninitialized variable warning

This is not really a runtime issue but Smatch complains that:

fs/cifs/smb2ops.c:1740 smb2_query_symlink()
error: uninitialized symbol 'resp_buftype'.

The warning is right that it can be uninitialized... Also "err_buf"
would be NULL at this point and we're not supposed to pass NULLs to
free_rsp_buf() or it might trigger some extra output if we turn on
debugging.

Signed-off-by: Dan Carpenter <[e-mail]>
Reviewed-by: Paulo Alcantara <[e-mail]>
Signed-off-by: Steve French <[e-mail]>

fs/cifs/smb2ops.c

···
 		       &resp_buftype);
 	if (!rc || !err_iov.iov_base) {
 		rc = -ENOENT;
-		goto querty_exit;
+		goto free_path;
 	}
 
 	err_buf = err_iov.iov_base;
···
 
  querty_exit:
 	free_rsp_buf(resp_buftype, err_buf);
+ free_path:
 	kfree(utf16_path);
 	return rc;
 }