drivers: squash lines for immediate return

Remove unneeded variables and assignments.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/ddr/fsl/ddr1_dimm_params.c b/drivers/ddr/fsl/ddr1_dimm_params.c
index 00cdc22..369b325 100644
--- a/drivers/ddr/fsl/ddr1_dimm_params.c
+++ b/drivers/ddr/fsl/ddr1_dimm_params.c
@@ -108,22 +108,14 @@
 static unsigned int
 compute_trfc_ps_from_spd(unsigned char trctrfc_ext, unsigned char trfc)
 {
-	unsigned int trfc_ps;
-
-	trfc_ps = (((trctrfc_ext & 0x1) * 256) + trfc) * 1000
+	return ((trctrfc_ext & 0x1) * 256 + trfc) * 1000
 		+ byte40_table_ps[(trctrfc_ext >> 1) & 0x7];
-
-	return trfc_ps;
 }
 
 static unsigned int
 compute_trc_ps_from_spd(unsigned char trctrfc_ext, unsigned char trc)
 {
-	unsigned int trc_ps;
-
-	trc_ps = trc * 1000 + byte40_table_ps[(trctrfc_ext >> 4) & 0x7];
-
-	return trc_ps;
+	return trc * 1000 + byte40_table_ps[(trctrfc_ext >> 4) & 0x7];
 }
 
 /*