[PATCH] x86/boot/KASLR: Change the function type to void

[Chao Fan]

Since function "handle_mem_options" is used only once:
arch/x86/boot/compressed/kaslr.c:421
        handle_mem_options();
The return value is useless, so change it to void.

And also clean a useless variable.

Suggested-by: Dou Liyang <douly.f...@cn.fujitsu.com>
Signed-off-by: Chao Fan <fanc.f...@cn.fujitsu.com>
---
 arch/x86/boot/compressed/kaslr.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 302517929932..78724caadcfb 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -244,7 +244,7 @@ static void parse_gb_huge_pages(char *param, char *val)
 }
 
 
-static int handle_mem_options(void)
+static void handle_mem_options(void)
 {
        char *args = (char *)get_cmd_line_ptr();
        size_t len = strlen((char *)args);
@@ -254,7 +254,7 @@ static int handle_mem_options(void)
 
        if (!strstr(args, "memmap=") && !strstr(args, "mem=") &&
                !strstr(args, "hugepages"))
-               return 0;
+               return;
 
        tmp_cmdline = malloc(len + 1);
        if (!tmp_cmdline)
@@ -272,8 +272,7 @@ static int handle_mem_options(void)
                /* Stop at -- */
                if (!val && strcmp(param, "--") == 0) {
                        warn("Only '--' specified in cmdline");
-                       free(tmp_cmdline);
-                       return -1;
+                       goto out;
                }
 
                if (!strcmp(param, "memmap")) {
@@ -286,16 +285,16 @@ static int handle_mem_options(void)
                        if (!strcmp(p, "nopentium"))
                                continue;
                        mem_size = memparse(p, &p);
-                       if (mem_size == 0) {
-                               free(tmp_cmdline);
-                               return -EINVAL;
-                       }
+                       if (mem_size == 0)
+                               goto out;
+
                        mem_limit = mem_size;
                }
        }
 
+out:
        free(tmp_cmdline);
-       return 0;
+       return;
 }
 
 /*
@@ -581,7 +580,6 @@ static void process_mem_region(struct mem_vector *entry,
                               unsigned long image_size)
 {
        struct mem_vector region, overlap;
-       struct slot_area slot_area;
        unsigned long start_orig, end;
        struct mem_vector cur_entry;
 
-- 
2.17.1