nexus: Fix NULL pointer dereference with NEXUS_CRYPTO_NONE_SHA1 suite
nexus: Fix NULL pointer dereference with NEXUS_CRYPTO_NONE_SHA1 suite

- Fix Oops on device registration when no encryption is requested

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr