video: goldfishfb: fix memory leak on driver remove

goldfish_fb_probe() allocates memory for fb, but goldfish_fb_remove() does
not have deallocation of fb, which leads to memory leak on probe/remove.

The patch adds deallocation into goldfish_fb_remove().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <[email protected]>
Cc: Aleksandar Markovic <[email protected]>
Cc: Miodrag Dinic <[email protected]>
Cc: Goran Ferenc <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>

Author: Druidos

drivers/video/fbdev/goldfishfb.c

@@ -304,6 +304,7 @@ static int goldfish_fb_remove(struct platform_device *pdev)
 	dma_free_coherent(&pdev->dev, framesize, (void *)fb->fb.screen_base,
 						fb->fb.fix.smem_start);
 	iounmap(fb->reg_base);
+	kfree(fb);
 	return 0;
 }