[ALSA] continue on IS_ERR from platform device registration

Continue with the next one on error from device registration.

This would seem the correct thing to do, even if it's not the probe()
error that we're getting.

Signed-off-by: Rene Herman <rene.herman@keyaccess.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/gus/interwave.c b/sound/isa/gus/interwave.c
index de71b7a9..4be472e 100644
--- a/sound/isa/gus/interwave.c
+++ b/sound/isa/gus/interwave.c
@@ -947,10 +947,8 @@
 #endif
 		device = platform_device_register_simple(INTERWAVE_DRIVER,
 							 i, NULL, 0);
-		if (IS_ERR(device)) {
-			err = PTR_ERR(device);
-			goto errout;
-		}
+		if (IS_ERR(device))
+			continue;
 		platform_devices[i] = device;
 		cards++;
 	}
@@ -966,14 +964,10 @@
 #ifdef MODULE
 		printk(KERN_ERR "InterWave soundcard not found or device busy\n");
 #endif
-		err = -ENODEV;
-		goto errout;
+		snd_interwave_unregister_all();
+		return -ENODEV;
 	}
 	return 0;
-
- errout:
-	snd_interwave_unregister_all();
-	return err;
 }
 
 static void __exit alsa_card_interwave_exit(void)