[ALSA] seq-oss - Remove invalid BUG()

Removed invalid BUG() - the driver should handle the error case properly
rather than issuing BUG().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/core/seq/oss/seq_oss_synth.c

@@ -245,8 +245,13 @@ snd_seq_oss_synth_setup(struct seq_oss_devinfo *dp)
 		info->nr_voices = rec->nr_voices;
 		if (info->nr_voices > 0) {
 			info->ch = kcalloc(info->nr_voices, sizeof(struct seq_oss_chinfo), GFP_KERNEL);
-			if (!info->ch)
-				BUG();
+			if (!info->ch) {
+				snd_printk(KERN_ERR "Cannot malloc\n");
+				rec->oper.close(&info->arg);
+				module_put(rec->oper.owner);
+				snd_use_lock_free(&rec->use_lock);
+				continue;
+			}
 			reset_channels(info);
 		}
 		debug_printk(("synth %d assigned\n", i));