BACKPORT: ALSA: usb-audio: Minor code cleanup in create_fixed_stream_quirk()

(cherry picked from commit 902eb7fd1e4af3ac69b9b30f8373f118c92b9729)

Just a minor code cleanup: unify the error paths.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Change-Id: I8253a86235df2ac1258153c9e128fa158527567f
Bug: 30952477
1 file changed