linux-wandboard

s390/pfault: always search for task with reported pid

Make the code a bit more symmetric and always search for the task of the
reported pid. This simplifies the code a bit.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>