video: mmpfb: cleanup some static checker warnings in probe()

Sparse complains about using zero instead of NULL for pointers.
Probably, if we enabled the warning, then GCC would complain about the
unused initializers. I've just removed them.

Smatch complains that we first check if "fbi" is NULL and then
dereference it in the error handling. It turns out that "fbi" can't be
NULL so I've removed the check.

Signed-off-by: Dan Carpenter <[e-mail]>
Reviewed-by: Jingoo Han <[e-mail]>
Signed-off-by: Tomi Valkeinen <[e-mail]>

drivers/video/fbdev/mmp/fb/mmpfb.c

···
 static int mmpfb_probe(struct platform_device *pdev)
 {
 	struct mmp_buffer_driver_mach_info *mi;
-	struct fb_info *info = 0;
-	struct mmpfb_info *fbi = 0;
+	struct fb_info *info;
+	struct mmpfb_info *fbi;
 	int ret, modes_num;
 
 	mi = pdev->dev.platform_data;
···
 	if (info == NULL)
 		return -ENOMEM;
 	fbi = info->par;
-	if (!fbi) {
-		ret = -EINVAL;
-		goto failed;
-	}
 
 	/* init fb */
 	fbi->fb_info = info;
···
 		fbi->fb_start_dma);
 failed_destroy_mutex:
 	mutex_destroy(&fbi->access_ok);
-failed:
 	dev_err(fbi->dev, "mmp-fb: frame buffer device init failed\n");
 
 	framebuffer_release(info);