riscv: Fix wrong size passed to local_flush_tlb_range_asid()

local_flush_tlb_range_asid() takes the size as argument, not the end of
the range to flush, so fix this by computing the size from the end and
the start of the range.

Fixes: 7a92fc8 ("mm: Introduce flush_cache_vmap_early()")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>

Author: Alexandre Ghiti

arch/riscv/mm/tlbflush.c

@@ -68,7 +68,7 @@ static inline void local_flush_tlb_range_asid(unsigned long start,
 
 void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
 {
-	local_flush_tlb_range_asid(start, end, PAGE_SIZE, FLUSH_TLB_NO_ASID);
+	local_flush_tlb_range_asid(start, end - start, PAGE_SIZE, FLUSH_TLB_NO_ASID);
 }
 
 static void __ipi_flush_tlb_all(void *info)