LoongArch: Handle KCOV __init vs inline mismatches

When the KCOV is enabled all functions get instrumented, unless
the __no_sanitize_coverage attribute is used. To prepare for
__no_sanitize_coverage being applied to __init functions, we have to
handle differences in how GCC's inline optimizations get resolved.
For LoongArch this exposed several places where __init annotations
were missing but ended up being "accidentally correct". So fix these
cases.

Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Author: kees

arch/loongarch/include/asm/smp.h

@@ -39,7 +39,7 @@ int loongson_cpu_disable(void);
 void loongson_cpu_die(unsigned int cpu);
 #endif
 
-static inline void plat_smp_setup(void)
+static inline void __init plat_smp_setup(void)
 {
 	loongson_smp_setup();
 }

arch/loongarch/kernel/time.c

@@ -102,7 +102,7 @@ static int constant_timer_next_event(unsigned long delta, struct clock_event_dev
 	return 0;
 }
 
-static unsigned long __init get_loops_per_jiffy(void)
+static unsigned long get_loops_per_jiffy(void)
 {
 	unsigned long lpj = (unsigned long)const_clock_freq;
 

arch/loongarch/mm/ioremap.c

@@ -16,12 +16,12 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
 
 }
 
-void *early_memremap_ro(resource_size_t phys_addr, unsigned long size)
+void * __init early_memremap_ro(resource_size_t phys_addr, unsigned long size)
 {
 	return early_memremap(phys_addr, size);
 }
 
-void *early_memremap_prot(resource_size_t phys_addr, unsigned long size,
+void * __init early_memremap_prot(resource_size_t phys_addr, unsigned long size,
 		    unsigned long prot_val)
 {
 	return early_memremap(phys_addr, size);