soc/intel/broadwell: Drop unnecessary `sa_dev`

Change-Id: Icc70adb0c3527a082622fd0ab70888e6cdf6b0ed
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46982
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/broadwell/northbridge.c b/src/soc/intel/broadwell/northbridge.c
index b9aeb38..5f7d43b 100644
--- a/src/soc/intel/broadwell/northbridge.c
+++ b/src/soc/intel/broadwell/northbridge.c
@@ -280,7 +280,6 @@
 	uint64_t mc_values[NUM_MAP_ENTRIES];
 	unsigned long dpr_size = 0;
 	u32 dpr_reg;
-	struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT);
 
 	/* Read in the MAP registers and report their values. */
 	mc_read_map_entries(dev, &mc_values[0]);
@@ -292,7 +291,7 @@
 	 * the DPR register reports the TOP of the region, which is the same
 	 * as TSEG base.  The region size is reported in MiB in bits 11:4.
 	 */
-	dpr_reg = pci_read_config32(sa_dev, DPR);
+	dpr_reg = pci_read_config32(dev, DPR);
 	if (dpr_reg & DPR_EPM) {
 		dpr_size = (dpr_reg & DPR_SIZE_MASK) << 16;
 		printk(BIOS_INFO, "DPR SIZE: 0x%lx\n", dpr_size);