Use RV_EXTRACT_ITYPE_IMM, instead of re-implementing it in simulate_jalr().

Signed-off-by: Nam Cao <namcao@linutronix.de>
---
 arch/riscv/kernel/probes/simulate-insn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/probes/simulate-insn.c b/arch/riscv/kernel/probes/simulate-insn.c
index 2b3cd69d6f8e..fa581590c1f8 100644
--- a/arch/riscv/kernel/probes/simulate-insn.c
+++ b/arch/riscv/kernel/probes/simulate-insn.c
@@ -64,7 +64,7 @@ bool __kprobes simulate_jalr(u32 opcode, unsigned long addr, struct pt_regs *reg
 	 */
 	bool ret;
 	unsigned long base_addr;
-	u32 imm = (opcode >> 20) & 0xfff;
+	u32 imm = RV_EXTRACT_ITYPE_IMM(opcode);
 	u32 rd_index = RV_EXTRACT_RD_REG(opcode);
 	u32 rs1_index = RV_EXTRACT_RS1_REG(opcode);
 
-- 
2.39.5