drivers/video/w100fb.c: avoid a couple of error-path NULL derefs

Fix a couple of error-patch oopses identified by Marcio Buss in
http://bugzilla.kernel.org/show_bug.cgi?id=9567.

Cc: Marcio Buss <[e-mail]>
Cc: Jeff Zhou <[e-mail]>
Cc: "Antonino A. Daplas" <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/video/w100fb.c

···
 	printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id);
 	return 0;
 out:
-	fb_dealloc_cmap(&info->cmap);
-	kfree(info->pseudo_palette);
+	if (info) {
+		fb_dealloc_cmap(&info->cmap);
+		kfree(info->pseudo_palette);
+	}
 	if (remapped_fbuf != NULL)
 		iounmap(remapped_fbuf);
 	if (remapped_regs != NULL)