TLS server name not set when hostInCertificate not set

[jwbargsten]

Describe the bug
I have issues with connecting to a MSSQL server using TLS. I get the error

could not ping db	{"error": "TLS Handshake failed: tls: either ServerName or InsecureSkipVerify must be specified in the tls.Config"}

To Reproduce
using a connection string comparable to this:

sqlserver://someuser:somepass@somehost?TrustServerCertificate=false&encrypt=true

and the code

db, err := sqlx.Open("sqlserver", connectionString)
db.Ping()

I get the error shown above.

The issue can be reproduced by this test (add it to msdsn/conn_str_test.go)

func TestServerNameInTLSConfig(t *testing.T) {
	connStr := "sqlserver://someuser:somepass@somehost?TrustServerCertificate=false&encrypt=true"
	cfg, err := Parse(connStr)
	if err != nil {
		t.Errorf("Could not parse valid connection string %s: %v", connStr, err)
	}
	if cfg.TLSConfig.ServerName != "somehost" || cfg.Host != "somehost" {
		t.Errorf("Expected somehost as host %s and TLS server, but got %s", cfg.Host, cfg.TLSConfig.ServerName)
	}
}

Expected behavior
db.Ping() works

Additional context
I think the bug was introduced in fd44003

The code for setting p.Host was moved down in the parse function, resulting in an empty p.Host value at the time of the creation of p.TLSConfig.