vt8623fb: Don't clobber par->state.vgabase during open method.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

drivers/video/vt8623fb.c

@@ -292,7 +292,10 @@ static int vt8623fb_open(struct fb_info *info, int user)
 
 	mutex_lock(&(par->open_lock));
 	if (par->ref_count == 0) {
+		void __iomem *vgabase = par->state.vgabase;
+
 		memset(&(par->state), 0, sizeof(struct vgastate));
+		par->state.vgabase = vgabase;
 		par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
 		par->state.num_crtc = 0xA2;
 		par->state.num_seq = 0x50;