sstfb: check fb_alloc_cmap return value and handle failure properly

Signed-off-by: NAndres Salomon <dilinger@debian.org>
Acked-by: NKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/video/sstfb.c

@@ -1421,13 +1421,16 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
 		goto fail;
 	}
 	
-	fb_alloc_cmap(&info->cmap, 256, 0);
+	if (fb_alloc_cmap(&info->cmap, 256, 0)) {
+		printk(KERN_ERR "sstfb: can't alloc cmap memory.\n");
+		goto fail;
+	}
 
 	/* register fb */
 	info->device = &pdev->dev;
 	if (register_framebuffer(info) < 0) {
 		printk(KERN_ERR "sstfb: can't register framebuffer.\n");
-		goto fail;
+		goto fail_register;
 	}
 
 	sstfb_clear_screen(info);
@@ -1441,8 +1444,9 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
 
 	return 0;
 
-fail:
+fail_register:
 	fb_dealloc_cmap(&info->cmap);
+fail:
 	iounmap(info->screen_base);
 fail_fb_remap:
 	iounmap(par->mmio_vbase);