riscv/mm/fault: Simplify mm_fault_error()

Simplify the mm_fault_error() handling function by eliminating the
unnecessary gotos.
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

arch/riscv/mm/fault.c

@@ -39,25 +39,18 @@ static inline void no_context(struct pt_regs *regs, unsigned long addr)
 
 static inline void mm_fault_error(struct pt_regs *regs, unsigned long addr, vm_fault_t fault)
 {
-	if (fault & VM_FAULT_OOM)
-		goto out_of_memory;
-	else if (fault & VM_FAULT_SIGBUS)
-		goto do_sigbus;
-	BUG();
-
+	if (fault & VM_FAULT_OOM) {
 		/*
 		 * We ran out of memory, call the OOM killer, and return the userspace
 		 * (which will retry the fault, or kill us if we got oom-killed).
 		 */
-out_of_memory:
 		if (!user_mode(regs)) {
 			no_context(regs, addr);
 			return;
 		}
 		pagefault_out_of_memory();
 		return;
-
-do_sigbus:
+	} else if (fault & VM_FAULT_SIGBUS) {
 		/* Kernel mode? Handle exceptions or die */
 		if (!user_mode(regs)) {
 			no_context(regs, addr);
@@ -65,6 +58,8 @@ static inline void mm_fault_error(struct pt_regs *regs, unsigned long addr, vm_f
 		}
 		do_trap(regs, SIGBUS, BUS_ADRERR, addr);
 		return;
+	}
+	BUG();
 }
 
 static inline void bad_area(struct pt_regs *regs, struct mm_struct *mm, int code, unsigned long addr)