[PATCH v4 4/4] soc/tegra: fuse: Unmap registers once they are not needed anymore

[Dmitry Osipenko <digetx@xxxxxxxxx>]

Both Chip ID and strapping registers are now read out during of APB MISC
initialization, the registers' mapping isn't needed anymore once registers
are read. Hence let's unmap registers once they are not needed anymore,
for consistency.

Suggested-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
 drivers/soc/tegra/fuse/tegra-apbmisc.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index 1f4308be6ec4..37a6cb5fe744 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -157,16 +157,20 @@ void __init tegra_init_apbmisc(void)
 	}
 
 	apbmisc_base = ioremap(apbmisc.start, resource_size(&apbmisc));
-	if (!apbmisc_base)
+	if (!apbmisc_base) {
 		pr_err("failed to map APBMISC registers\n");
-	else
+	} else {
 		chipid = readl_relaxed(apbmisc_base + 4);
+		iounmap(apbmisc_base);
+	}
 
 	strapping_base = ioremap(straps.start, resource_size(&straps));
-	if (!strapping_base)
+	if (!strapping_base) {
 		pr_err("failed to map strapping options registers\n");
-	else
+	} else {
 		strapping = readl_relaxed(strapping_base);
+		iounmap(strapping_base);
+	}
 
 	long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
 }
-- 
2.24.0