staging: lustre: o2iblnd: fix misleading indentation

The code is correct, the indentation is misleading. Only the the return rc
is part of the conditional statement if rc != 0.

Fix a smatch warning:
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:2157
kiblnd_hdev_setup_mrs() warn: curly braces intended?
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>