Fix some possible null pointer dereferences that were detected by the
static code analyser, smatch.
Signed-off-by: NSunil Mushran <sunil.mushran@oracle.com>
Reported-by: NDan Carpenter <error27@gmail.com>
Reported-by: NGuozhonghua <guozhonghua@h3c.com>
Cc: Sunil Mushran <sunil.mushran@gmail.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>