[S390] zcrypt: Rework length parameter checking.
[S390] zcrypt: Rework length parameter checking.

Fix length checking of the expected reply and remove re-adjustment of
expected control block length.

Signed-off-by: Holger Dengler <60fd8536301150cbca7d02bd1eb7a645a04a706e@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <52616596d8f5df0d597e85ab515377f92f939c68@de.ibm.com>

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