[PATCH] arcfb: Fix dereference before NULL check

info->par is dereferenced before info is checked for NULL. Fix.

Coverity Bug 833

Signed-off-by: Antonino Daplas <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/video/arcfb.c

···
 	inode = file->f_dentry->d_inode;
 	fbidx = iminor(inode);
 	info = registered_fb[fbidx];
-	par = info->par;
 
 	if (!info || !info->screen_base)
 		return -ENODEV;
 
+	par = info->par;
 	xres = info->var.xres;
 	fbmemlength = (xres * info->var.yres)/8;