ALSA: emu10k1: fix inconsistent indenting warning in snd_emu10k1_synth_free()

Fix below inconsistent indenting smatch warning.
smatch warnings:
sound/pci/emu10k1/memory.c:444 snd_emu10k1_synth_free() warn: inconsistent indenting

Signed-off-by: Charles Han <hanchunchao@inspur.com>
Link: https://patch.msgid.link/20250227085243.18413-1-hanchunchao@inspur.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>