ALSA: emu10k1: Load firmware when it was already cached

commit b56ddbe5 upstream.

This expands the regression fix from
d2821599.
The firmware also needs to be loaded when it was already cached.

Signed-off-by: Florian Zeitz <florob@babelmonkeys.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>