nb/intel/nehalem: Fix 'dead assignment'

Dead increment spotted out using clang-tools.
Value stored to 'some_delay_3_halfcycles' is never read.

Change-Id: I8133f9e8786006bd278d281a132b6a2bd863a967
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36135
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/northbridge/intel/nehalem/raminit.c b/src/northbridge/intel/nehalem/raminit.c
index 21c13d9..a393cb7 100644
--- a/src/northbridge/intel/nehalem/raminit.c
+++ b/src/northbridge/intel/nehalem/raminit.c
@@ -820,12 +820,10 @@
 	int some_delay_2_halfcycles_ceil;
 	int some_delay_2_halfcycles_floor;
 	int some_delay_3_ps;
-	int some_delay_3_halfcycles;
 	int some_delay_3_ps_rounded;
 	int some_delay_1_cycle_ceil;
 	int some_delay_1_cycle_floor;
 
-	some_delay_3_halfcycles = 0;
 	some_delay_3_ps_rounded = 0;
 	extended_silicon_revision = info->silicon_revision;
 	if (!info->silicon_revision)
@@ -873,13 +871,12 @@
 	some_delay_3_ps =
 	    halfcycle_ps(info) - some_delay_2_ps % halfcycle_ps(info);
 	if (info->revision_flag_1) {
-		if (some_delay_3_ps < 150)
-			some_delay_3_halfcycles = 0;
-		else
-			some_delay_3_halfcycles =
+		if (some_delay_3_ps >= 150) {
+			const int some_delay_3_halfcycles =
 			    (some_delay_3_ps << 6) / halfcycle_ps(info);
-		some_delay_3_ps_rounded =
-		    halfcycle_ps(info) * some_delay_3_halfcycles >> 6;
+			some_delay_3_ps_rounded =
+			    halfcycle_ps(info) * some_delay_3_halfcycles >> 6;
+		}
 	}
 	some_delay_2_halfcycles_ceil =
 	    (some_delay_2_ps + halfcycle_ps(info) - 1) / halfcycle_ps(info) -