[S390] vmwatchdog: fix broken inline assembly.

Constraint for err is wrong since it is preinitialized and the code
relies on it in case of an exception.

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