[PPP]: handle kmalloc failures and convert to using kzalloc
[PPP]: handle kmalloc failures and convert to using kzalloc

The PPP code contains two kmalloc()s followed by memset()s without
handling a possible memory allocation failure.  (Suggested by Joe
Perches).

And furthermore, conversions from kmalloc+memset to kzalloc.

[5c1e68b099950c134891f0b6e179498a8ebe9cf9@osdl.org: fix error-path leak]
[5c1e68b099950c134891f0b6e179498a8ebe9cf9@osdl.org: cleanups]
[19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org: don't add useless printk and cardmap_destroy calls]

Signed-off-by: Panagiotis Issaris <ce33592a53909e58924ee357b877870389c841d3@issaris.org>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@osdl.org>
Signed-off-by: Paul Mackerras <19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs