Revert "ALSA: line6: Only determine control port properties if needed"

Revert "ALSA: line6: Only determine control port properties if needed"

This reverts commit e865fb8f5bc411ab3322c0ce048cc64023d9c423.

The commit caused a regression on LINE6 Transport that has no control
caps.  Although reverting the commit may result back in a spurious
error message for some device again, it's the simplest regression fix,
hence it's taken as is at first.  The further code fix will follow
later.

Fixes: e865fb8f5bc4 ("ALSA: line6: Only determine control port properties if needed")
Reported-by: Igor Zinovev <zinigor@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>