nb/intel/haswell: Remove variable set but not used

Change-Id: I4e7f74f67f03131fae205a93dae3d61eca9cc0c7
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32895
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/haswell/raminit.c b/src/northbridge/intel/haswell/raminit.c
index c24bb67..9beb23c 100644
--- a/src/northbridge/intel/haswell/raminit.c
+++ b/src/northbridge/intel/haswell/raminit.c
@@ -186,7 +186,7 @@
 
 void setup_sdram_meminfo(struct pei_data *pei_data)
 {
-	u32 addr_decoder_common, addr_decode_ch[2];
+	u32 addr_decode_ch[2];
 	struct memory_info* mem_info;
 	struct dimm_info *dimm;
 	int ddr_frequency;
@@ -199,7 +199,8 @@
 		die("Failed to add memory info to CBMEM.\n");
 	memset(mem_info, 0, sizeof(struct memory_info));
 
-	addr_decoder_common = MCHBAR32(0x5000);
+	/* FIXME: Do we need to read MCHBAR32(0x5000) ? */
+	MCHBAR32(0x5000);
 	addr_decode_ch[0] = MCHBAR32(0x5004);
 	addr_decode_ch[1] = MCHBAR32(0x5008);