We don't need to initialize "ret".  We can move the IS_ERR() checks into
the if condition instead of doing an assignment first.  Also there is a
check for "ret" when we know it is zero so we can remove that.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NEduardo Valentin <edubezval@gmail.com>