encrypted_keys: avoid dumping the master key if the request fails
encrypted_keys: avoid dumping the master key if the request fails

Do not dump the master key if an error is encountered during the request.

Signed-off-by: Roberto Sassu <b795143cf975fac5fdf5062ce277ad815f3aaf8e@polito.it>
Acked-by: Gianluca Ramunno <8a6c5ea331bca6e5d8070dd46ca5bcb9cc82fc08@polito.it>
Signed-off-by: Mimi Zohar <f02992f7c171053741caa6b515d9896745b37477@linux.vnet.ibm.com>

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