[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/es18xx.c b/sound/isa/es18xx.c
index 9fbc185..0da249b 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -2391,10 +2391,8 @@
 			continue;
 		device = platform_device_register_simple(ES18XX_DRIVER,
 							 i, NULL, 0);
-		if (IS_ERR(device)) {
-			err = PTR_ERR(device);
-			goto errout;
-		}
+		if (IS_ERR(device))
+	       		continue;
 		platform_devices[i] = device;
 		cards++;
 	}
@@ -2411,14 +2409,10 @@
 #ifdef MODULE
 		snd_printk(KERN_ERR "ESS AudioDrive ES18xx soundcard not found or device busy\n");
 #endif
-		err = -ENODEV;
-		goto errout;
+		snd_es18xx_unregister_all();
+		return -ENODEV;
 	}
 	return 0;
-
- errout:
-	snd_es18xx_unregister_all();
-	return err;
 }
 
 static void __exit alsa_card_es18xx_exit(void)