Fixup error path, without that one the driver kills the machine by oopsing
in the IRQ handler in case the frontend initialization fails.
Signed-off-by: NGerd Knorr <kraxel@bytesex.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>