If you observe, In case of panic recovery you can only prevent the function from crashing at exit.

panic_revcovery.go

package main

import "fmt"

func main() {
	f()
	fmt.Println("Returned normally from f.")
}

func f() {
	defer func() {
		if r := recover(); r != nil {
			fmt.Println("Recovered in f", r)
		}
	}()

	fmt.Println("Calling g.")
	g(0)
	g(2)
	g(3)
	g(1)
	fmt.Println("Returned normally from g.")
}

func g(i int) {
	if i == 3 {
		fmt.Println("Panicking!")
		panic(fmt.Sprintf("%v", i))
	} else {
		fmt.Println("Printing in g", i)
	}
	defer fmt.Println("Defer in g", i)
}

Output:

piyush:~ [] $ go run /tmp/test.go 
Calling g.
Printing in g 0
Defer in g 0
Printing in g 2
Defer in g 2
Panicking!
Recovered in f 3
Returned normally from f.