riscv: Move call to init_cpu_topology() to later initialization stage

If "capacity-dmips-mhz" is present in a CPU DT node,
topology_parse_cpu_capacity() will fail to allocate memory. arm64, with
which this code path is shared, does not call
topology_parse_cpu_capacity() until later in boot where memory
allocation is available. While "capacity-dmips-mhz" is not yet a valid
property on RISC-V, invalid properties should be ignored rather than
cause issues. Move init_cpu_topology(), which calls
topology_parse_cpu_capacity(), to a later initialization stage, to match
arm64.

As a side effect of this change, RISC-V is "protected" from changes to
core topology code that would work on arm64 where memory allocation is
safe but on RISC-V isn't.

Fixes: 03f11f03dbfe ("RISC-V: Parse cpu topology during boot.")
Reviewed-by: Conor Dooley <[e-mail]>
Reviewed-by: Andrew Jones <[e-mail]>
Signed-off-by: Ley Foon Tan <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
[Palmer: use Conor's commit text]
Link: https://lore.kernel.org/linux-riscv/[e-mail]/T/#me592d4c8b9508642954839f0077288a353b0b9b2
Signed-off-by: Palmer Dabbelt <[e-mail]>

arch/riscv/kernel/smpboot.c

···
 
 void __init smp_prepare_boot_cpu(void)
 {
-	init_cpu_topology();
 }
 
 void __init smp_prepare_cpus(unsigned int max_cpus)
···
 	int cpuid;
 	int ret;
 	unsigned int curr_cpuid;
+
+	init_cpu_topology();
 
 	curr_cpuid = smp_processor_id();
 	store_cpu_topology(curr_cpuid);