efi/gop: Remove redundant current_fb_base

current_fb_base isn't used for anything except assigning to fb_base if
we locate a suitable gop.
Signed-off-by: NArvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200320020028.1936003-2-nivedita@alum.mit.eduSigned-off-by: NArd Biesheuvel <ardb@kernel.org>

drivers/firmware/efi/libstub/gop.c

@@ -108,7 +108,6 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
 		efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID;
 		bool conout_found = false;
 		void *dummy = NULL;
-		efi_physical_addr_t current_fb_base;
 
 		status = efi_bs_call(handle_protocol, h, proto, (void **)&gop);
 		if (status != EFI_SUCCESS)
@@ -120,7 +119,6 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
 
 		mode = efi_table_attr(gop, mode);
 		info = efi_table_attr(mode, info);
-		current_fb_base = efi_table_attr(mode, frame_buffer_base);
 
 		if ((!first_gop || conout_found) &&
 		    info->pixel_format != PIXEL_BLT_ONLY) {
@@ -136,7 +134,7 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
 			pixel_format = info->pixel_format;
 			pixel_info = info->pixel_information;
 			pixels_per_scan_line = info->pixels_per_scan_line;
-			fb_base = current_fb_base;
+			fb_base = efi_table_attr(mode, frame_buffer_base);
 
 			/*
 			 * Once we've found a GOP supporting ConOut,