[PATCH] janitor: vgastate: cleanup iounmap() usage

From: "Randy.Dunlap" <rddunlap@osdl.org>

From: Leann Ogasawara <ogasawara@osdl.org>

Patch inserts missing iounmap's on error and also removes unnecessary
iounmap's.

drivers/video/vgastate.c

@@ -420,7 +420,6 @@ int save_vga(struct vgastate *state)
 
 		if (!fbbase) {
 			vga_cleanup(state);
-			iounmap(fbbase);
 			return 1;
 		}
 
@@ -430,6 +429,7 @@ int save_vga(struct vgastate *state)
 		if (state->flags & VGA_SAVE_FONT0) {
 			saved->vga_font0 = vmalloc(4 * 8192);
 			if (!saved->vga_font0) {
+				iounmap(fbbase);
 				vga_cleanup(state);
 				return 1;
 			}
@@ -441,6 +441,7 @@ int save_vga(struct vgastate *state)
 		if (state->flags & VGA_SAVE_FONT1) {
 			saved->vga_font1 = vmalloc(state->memsize);
 			if (!saved->vga_font1) {
+				iounmap(fbbase);
 				vga_cleanup(state);
 				return 1;
 			}
@@ -451,6 +452,7 @@ int save_vga(struct vgastate *state)
 		if (state->flags & VGA_SAVE_TEXT) {
 			saved->vga_text = vmalloc(8192 * 2);
 			if (!saved->vga_text) {
+				iounmap(fbbase);
 				vga_cleanup(state);
 				return 1;
 			}
@@ -475,7 +477,6 @@ int restore_vga (struct vgastate *state)
 
 		if (!fbbase) {
 			vga_cleanup(state);
-			iounmap(fbbase);
 			return 1;
 		}
 		restore_vga_text(state, fbbase);