[PATCH 3/3] MIPS: fix misleading elfcorehdr reservation success message

[Sang-Heon Jeon <ekffu200098@gmail.com>]

mips_reserve_vmcore() does not check the return value of
memblock_reserve(), so a success message is falsely printed when the
reservation fails.

Reserve before printing the success message. Check the return value and
warn on failure instead.

Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
---
 arch/mips/kernel/setup.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 1ae6d0c0e1d6..c7769ed882e8 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -437,10 +437,13 @@ static void __init mips_reserve_vmcore(void)
 		}
 	}
 
+	if (memblock_reserve(elfcorehdr_addr, elfcorehdr_size)) {
+		pr_warn("Failed to reserve memory for kdump\n");
+		return;
+	}
+
 	pr_info("Reserving %ldKB of memory at %ldKB for kdump\n",
 		(unsigned long)elfcorehdr_size >> 10, (unsigned long)elfcorehdr_addr >> 10);
-
-	memblock_reserve(elfcorehdr_addr, elfcorehdr_size);
 #endif
 }
 
-- 
2.43.0